3288b15a39
Add new feature bits for the net device Since the new feature bits are >= 32, add support for reading higher than 32bit feature words from the virtio mmio interface.
61 lines
1.4 KiB
C
61 lines
1.4 KiB
C
/*
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* Copyright (c) 2014 Travis Geiselbrecht
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*
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* Use of this source code is governed by a MIT-style
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* license that can be found in the LICENSE file or at
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* https://opensource.org/licenses/MIT
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*/
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#pragma once
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#include <lk/compiler.h>
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#include <stdint.h>
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// V1 config
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struct virtio_mmio_config {
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/* 0x00 */
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uint32_t magic;
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uint32_t version;
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uint32_t device_id;
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uint32_t vendor_id;
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/* 0x10 */
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uint32_t host_features;
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uint32_t host_features_sel;
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uint32_t __reserved0[2];
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/* 0x20 */
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uint32_t guest_features;
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uint32_t guest_features_sel;
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uint32_t guest_page_size;
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uint32_t __reserved1[1];
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/* 0x30 */
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uint32_t queue_sel;
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uint32_t queue_num_max;
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uint32_t queue_num;
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uint32_t queue_align;
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/* 0x40 */
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uint32_t queue_pfn;
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uint32_t __reserved2[3];
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/* 0x50 */
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uint32_t queue_notify;
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uint32_t __reserved3[3];
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/* 0x60 */
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uint32_t interrupt_status;
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uint32_t interrupt_ack;
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uint32_t __reserved4[2];
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/* 0x70 */
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uint32_t status;
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uint8_t __reserved5[0x8c];
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/* 0x100 */
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uint32_t config[0];
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};
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STATIC_ASSERT(sizeof(struct virtio_mmio_config) == 0x100);
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#define VIRTIO_MMIO_MAGIC 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_DEVICE_NEEDS_RESET (1<<6)
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#define VIRTIO_STATUS_FAILED (1<<7)
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