6a504290a7
This patch aims at isolating MSIX notion into PCI layer. Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com> Reviewed-by: David Marchand <david.marchand@redhat.com>
72 lines
1.4 KiB
C
72 lines
1.4 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2014 Intel Corporation
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* Copyright(c) 2020 Red Hat, Inc.
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*/
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#include "virtio.h"
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uint64_t
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virtio_negotiate_features(struct virtio_hw *hw, uint64_t host_features)
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{
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uint64_t features;
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/*
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* Limit negotiated features to what the driver, virtqueue, and
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* host all support.
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*/
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features = host_features & hw->guest_features;
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VIRTIO_OPS(hw)->set_features(hw, features);
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return features;
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}
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void
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virtio_read_dev_config(struct virtio_hw *hw, size_t offset,
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void *dst, int length)
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{
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VIRTIO_OPS(hw)->read_dev_cfg(hw, offset, dst, length);
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}
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void
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virtio_write_dev_config(struct virtio_hw *hw, size_t offset,
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const void *src, int length)
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{
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VIRTIO_OPS(hw)->write_dev_cfg(hw, offset, src, length);
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}
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void
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virtio_reset(struct virtio_hw *hw)
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{
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VIRTIO_OPS(hw)->set_status(hw, VIRTIO_CONFIG_STATUS_RESET);
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/* flush status write */
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VIRTIO_OPS(hw)->get_status(hw);
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}
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void
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virtio_reinit_complete(struct virtio_hw *hw)
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{
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virtio_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER_OK);
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}
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void
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virtio_set_status(struct virtio_hw *hw, uint8_t status)
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{
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if (status != VIRTIO_CONFIG_STATUS_RESET)
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status |= VIRTIO_OPS(hw)->get_status(hw);
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VIRTIO_OPS(hw)->set_status(hw, status);
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}
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uint8_t
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virtio_get_status(struct virtio_hw *hw)
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{
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return VIRTIO_OPS(hw)->get_status(hw);
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}
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uint8_t
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virtio_get_isr(struct virtio_hw *hw)
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{
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return VIRTIO_OPS(hw)->get_isr(hw);
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}
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