rte_virtio: use linux headers where possible
Move local copy of linux header code to internal include/linux directory. Change-Id: I81049ff956c72bb32c099a3087cf5f43de911ce4 Signed-off-by: Dariusz Stojaczyk <dariuszx.stojaczyk@intel.com> Reviewed-on: https://review.gerrithub.io/381275 Tested-by: SPDK Automated Test System <sys_sgsw@intel.com> Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
This commit is contained in:
Dariusz Stojaczyk
Jim Harris
parent
d360eddc60
commit
aee263dfae
64
include/linux/virtio_config.h
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64
include/linux/virtio_config.h
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@ -0,0 +1,64 @@
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#ifndef _LINUX_VIRTIO_CONFIG_H
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#define _LINUX_VIRTIO_CONFIG_H
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/* This header, excluding the #ifdef __KERNEL__ part, is BSD licensed so
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* anyone can use the definitions to implement compatible drivers/servers.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of IBM nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE. */
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/* Virtio devices use a standardized configuration space to define their
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* features and pass configuration information, but each implementation can
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* store and access that space differently. */
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#include <linux/types.h>
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/* Status byte for guest to report progress, and synchronize features. */
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/* We have seen device and processed generic fields (VIRTIO_CONFIG_F_VIRTIO) */
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#define VIRTIO_CONFIG_S_ACKNOWLEDGE 1
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/* We have found a driver for the device. */
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#define VIRTIO_CONFIG_S_DRIVER 2
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/* Driver has used its parts of the config, and is happy */
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#define VIRTIO_CONFIG_S_DRIVER_OK 4
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/* Driver has finished configuring features */
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#define VIRTIO_CONFIG_S_FEATURES_OK 8
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/* We've given up on this device. */
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#define VIRTIO_CONFIG_S_FAILED 0x80
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/* Some virtio feature bits (currently bits 28 through 32) are reserved for the
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* transport being used (eg. virtio_ring), the rest are per-device feature
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* bits. */
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#define VIRTIO_TRANSPORT_F_START 28
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#define VIRTIO_TRANSPORT_F_END 33
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#ifndef VIRTIO_CONFIG_NO_LEGACY
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/* Do we get callbacks when the ring is completely used, even if we've
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* suppressed them? */
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#define VIRTIO_F_NOTIFY_ON_EMPTY 24
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/* Can the device handle any descriptor layout? */
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#define VIRTIO_F_ANY_LAYOUT 27
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#endif /* VIRTIO_CONFIG_NO_LEGACY */
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/* v1.0 compliant. */
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#define VIRTIO_F_VERSION_1 32
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#endif /* _LINUX_VIRTIO_CONFIG_H */
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199
include/linux/virtio_pci.h
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199
include/linux/virtio_pci.h
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@ -0,0 +1,199 @@
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/*
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* Virtio PCI driver
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*
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* This module allows virtio devices to be used over a virtual PCI device.
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* This can be used with QEMU based VMMs like KVM or Xen.
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*
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* Copyright IBM Corp. 2007
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>
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*
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* This header is BSD licensed so anyone can use the definitions to implement
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* compatible drivers/servers.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of IBM nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _LINUX_VIRTIO_PCI_H
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#define _LINUX_VIRTIO_PCI_H
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#include <linux/types.h>
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#ifndef VIRTIO_PCI_NO_LEGACY
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/* A 32-bit r/o bitmask of the features supported by the host */
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#define VIRTIO_PCI_HOST_FEATURES 0
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/* A 32-bit r/w bitmask of features activated by the guest */
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#define VIRTIO_PCI_GUEST_FEATURES 4
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/* A 32-bit r/w PFN for the currently selected queue */
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#define VIRTIO_PCI_QUEUE_PFN 8
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/* A 16-bit r/o queue size for the currently selected queue */
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#define VIRTIO_PCI_QUEUE_NUM 12
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/* A 16-bit r/w queue selector */
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#define VIRTIO_PCI_QUEUE_SEL 14
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/* A 16-bit r/w queue notifier */
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#define VIRTIO_PCI_QUEUE_NOTIFY 16
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/* An 8-bit device status register. */
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#define VIRTIO_PCI_STATUS 18
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/* An 8-bit r/o interrupt status register. Reading the value will return the
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* current contents of the ISR and will also clear it. This is effectively
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* a read-and-acknowledge. */
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#define VIRTIO_PCI_ISR 19
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/* MSI-X registers: only enabled if MSI-X is enabled. */
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/* A 16-bit vector for configuration changes. */
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#define VIRTIO_MSI_CONFIG_VECTOR 20
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/* A 16-bit vector for selected queue notifications. */
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#define VIRTIO_MSI_QUEUE_VECTOR 22
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/* The remaining space is defined by each driver as the per-driver
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* configuration space */
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#define VIRTIO_PCI_CONFIG_OFF(msix_enabled) ((msix_enabled) ? 24 : 20)
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/* Deprecated: please use VIRTIO_PCI_CONFIG_OFF instead */
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#define VIRTIO_PCI_CONFIG(dev) VIRTIO_PCI_CONFIG_OFF((dev)->msix_enabled)
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/* Virtio ABI version, this must match exactly */
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#define VIRTIO_PCI_ABI_VERSION 0
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/* How many bits to shift physical queue address written to QUEUE_PFN.
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* 12 is historical, and due to x86 page size. */
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#define VIRTIO_PCI_QUEUE_ADDR_SHIFT 12
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/* The alignment to use between consumer and producer parts of vring.
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* x86 pagesize again. */
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#define VIRTIO_PCI_VRING_ALIGN 4096
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#endif /* VIRTIO_PCI_NO_LEGACY */
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/* The bit of the ISR which indicates a device configuration change. */
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#define VIRTIO_PCI_ISR_CONFIG 0x2
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/* Vector value used to disable MSI for queue */
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#define VIRTIO_MSI_NO_VECTOR 0xffff
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#ifndef VIRTIO_PCI_NO_MODERN
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/* IDs for different capabilities. Must all exist. */
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/* Common configuration */
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#define VIRTIO_PCI_CAP_COMMON_CFG 1
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/* Notifications */
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#define VIRTIO_PCI_CAP_NOTIFY_CFG 2
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/* ISR access */
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#define VIRTIO_PCI_CAP_ISR_CFG 3
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/* Device specific configuration */
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#define VIRTIO_PCI_CAP_DEVICE_CFG 4
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/* PCI configuration access */
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#define VIRTIO_PCI_CAP_PCI_CFG 5
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/* This is the PCI capability header: */
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struct virtio_pci_cap {
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__u8 cap_vndr; /* Generic PCI field: PCI_CAP_ID_VNDR */
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__u8 cap_next; /* Generic PCI field: next ptr. */
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__u8 cap_len; /* Generic PCI field: capability length */
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__u8 cfg_type; /* Identifies the structure. */
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__u8 bar; /* Where to find it. */
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__u8 padding[3]; /* Pad to full dword. */
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__le32 offset; /* Offset within bar. */
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__le32 length; /* Length of the structure, in bytes. */
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};
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struct virtio_pci_notify_cap {
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struct virtio_pci_cap cap;
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__le32 notify_off_multiplier; /* Multiplier for queue_notify_off. */
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};
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/* Fields in VIRTIO_PCI_CAP_COMMON_CFG: */
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struct virtio_pci_common_cfg {
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/* About the whole device. */
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__le32 device_feature_select; /* read-write */
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__le32 device_feature; /* read-only */
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__le32 guest_feature_select; /* read-write */
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__le32 guest_feature; /* read-write */
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__le16 msix_config; /* read-write */
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__le16 num_queues; /* read-only */
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__u8 device_status; /* read-write */
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__u8 config_generation; /* read-only */
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/* About a specific virtqueue. */
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__le16 queue_select; /* read-write */
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__le16 queue_size; /* read-write, power of 2. */
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__le16 queue_msix_vector; /* read-write */
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__le16 queue_enable; /* read-write */
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__le16 queue_notify_off; /* read-only */
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__le32 queue_desc_lo; /* read-write */
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__le32 queue_desc_hi; /* read-write */
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__le32 queue_avail_lo; /* read-write */
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__le32 queue_avail_hi; /* read-write */
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__le32 queue_used_lo; /* read-write */
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__le32 queue_used_hi; /* read-write */
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};
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/* Fields in VIRTIO_PCI_CAP_PCI_CFG: */
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struct virtio_pci_cfg_cap {
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struct virtio_pci_cap cap;
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__u8 pci_cfg_data[4]; /* Data for BAR access. */
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};
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/* Macro versions of offsets for the Old Timers! */
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#define VIRTIO_PCI_CAP_VNDR 0
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#define VIRTIO_PCI_CAP_NEXT 1
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#define VIRTIO_PCI_CAP_LEN 2
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#define VIRTIO_PCI_CAP_CFG_TYPE 3
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#define VIRTIO_PCI_CAP_BAR 4
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#define VIRTIO_PCI_CAP_OFFSET 8
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#define VIRTIO_PCI_CAP_LENGTH 12
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#define VIRTIO_PCI_NOTIFY_CAP_MULT 16
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#define VIRTIO_PCI_COMMON_DFSELECT 0
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#define VIRTIO_PCI_COMMON_DF 4
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#define VIRTIO_PCI_COMMON_GFSELECT 8
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#define VIRTIO_PCI_COMMON_GF 12
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#define VIRTIO_PCI_COMMON_MSIX 16
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#define VIRTIO_PCI_COMMON_NUMQ 18
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#define VIRTIO_PCI_COMMON_STATUS 20
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#define VIRTIO_PCI_COMMON_CFGGENERATION 21
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#define VIRTIO_PCI_COMMON_Q_SELECT 22
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#define VIRTIO_PCI_COMMON_Q_SIZE 24
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#define VIRTIO_PCI_COMMON_Q_MSIX 26
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#define VIRTIO_PCI_COMMON_Q_ENABLE 28
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#define VIRTIO_PCI_COMMON_Q_NOFF 30
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#define VIRTIO_PCI_COMMON_Q_DESCLO 32
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#define VIRTIO_PCI_COMMON_Q_DESCHI 36
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#define VIRTIO_PCI_COMMON_Q_AVAILLO 40
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#define VIRTIO_PCI_COMMON_Q_AVAILHI 44
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#define VIRTIO_PCI_COMMON_Q_USEDLO 48
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#define VIRTIO_PCI_COMMON_Q_USEDHI 52
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#endif /* VIRTIO_PCI_NO_MODERN */
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#endif
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@ -257,8 +257,8 @@ virtio_negotiate_features(struct virtio_dev *dev, uint64_t req_features)
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PMD_INIT_LOG(DEBUG, "negotiated features = %" PRIx64, dev->negotiated_features);
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vtpci_set_status(dev, VIRTIO_CONFIG_STATUS_FEATURES_OK);
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if (!(vtpci_get_status(dev) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
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vtpci_set_status(dev, VIRTIO_CONFIG_S_FEATURES_OK);
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if (!(vtpci_get_status(dev) & VIRTIO_CONFIG_S_FEATURES_OK)) {
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PMD_INIT_LOG(ERR,
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"failed to set FEATURES_OK status!");
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return -1;
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@ -277,10 +277,10 @@ virtio_dev_init(struct virtio_dev *dev, uint64_t req_features)
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vtpci_reset(dev);
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/* Tell the host we've noticed this device. */
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vtpci_set_status(dev, VIRTIO_CONFIG_STATUS_ACK);
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vtpci_set_status(dev, VIRTIO_CONFIG_S_ACKNOWLEDGE);
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/* Tell the host we've known how to drive the device. */
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vtpci_set_status(dev, VIRTIO_CONFIG_STATUS_DRIVER);
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vtpci_set_status(dev, VIRTIO_CONFIG_S_DRIVER);
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if (virtio_negotiate_features(dev, req_features) < 0)
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return -1;
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@ -58,12 +58,6 @@ struct virtio_driver g_virtio_driver = {
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#define PCI_CAP_ID_VNDR 0x09
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#define PCI_CAP_ID_MSIX 0x11
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/*
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* The remaining space is defined by each driver as the per-driver
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* configuration space.
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*/
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#define VIRTIO_PCI_CONFIG(hw) (((hw)->use_msix) ? 24 : 20)
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#define virtio_dev_get_hw(hw) \
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((struct virtio_hw *)((uintptr_t)(hw) - offsetof(struct virtio_hw, vdev)))
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@ -124,7 +118,7 @@ legacy_read_dev_config(struct virtio_dev *dev, size_t offset,
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struct virtio_hw *hw = virtio_dev_get_hw(dev);
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rte_pci_ioport_read(vtpci_io(dev), dst, length,
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VIRTIO_PCI_CONFIG(hw) + offset);
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VIRTIO_PCI_CONFIG_OFF(hw->use_msix) + offset);
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}
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static void
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@ -134,7 +128,7 @@ legacy_write_dev_config(struct virtio_dev *dev, size_t offset,
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struct virtio_hw *hw = virtio_dev_get_hw(dev);
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rte_pci_ioport_write(vtpci_io(dev), src, length,
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VIRTIO_PCI_CONFIG(hw) + offset);
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VIRTIO_PCI_CONFIG_OFF(hw->use_msix) + offset);
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}
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static uint64_t
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@ -497,7 +491,7 @@ vtpci_write_dev_config(struct virtio_dev *dev, size_t offset,
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void
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vtpci_reset(struct virtio_dev *dev)
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{
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vtpci_ops(dev)->set_status(dev, VIRTIO_CONFIG_STATUS_RESET);
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vtpci_ops(dev)->set_status(dev, VIRTIO_CONFIG_S_RESET);
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/* flush status write */
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vtpci_ops(dev)->get_status(dev);
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}
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@ -505,13 +499,13 @@ vtpci_reset(struct virtio_dev *dev)
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void
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vtpci_reinit_complete(struct virtio_dev *dev)
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{
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vtpci_set_status(dev, VIRTIO_CONFIG_STATUS_DRIVER_OK);
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vtpci_set_status(dev, VIRTIO_CONFIG_S_DRIVER_OK);
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}
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void
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vtpci_set_status(struct virtio_dev *dev, uint8_t status)
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{
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if (status != VIRTIO_CONFIG_STATUS_RESET)
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if (status != VIRTIO_CONFIG_S_RESET)
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status |= vtpci_ops(dev)->get_status(dev);
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vtpci_ops(dev)->set_status(dev, status);
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@ -35,6 +35,8 @@
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#define _VIRTIO_PCI_H_
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#include <stdint.h>
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#include <linux/virtio_config.h>
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#include <linux/virtio_pci.h>
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#include <rte_pci.h>
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@ -45,149 +47,13 @@ struct virtqueue;
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#define VIRTIO_MAX_DEVICES 128
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/* Extra status define for readability */
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#define VIRTIO_CONFIG_S_RESET 0
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/* VirtIO PCI vendor/device ID. */
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#define VIRTIO_PCI_VENDORID 0x1AF4
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#define VIRTIO_PCI_DEVICEID_SCSI_MODERN 0x1004
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/* VirtIO ABI version, this must match exactly. */
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#define VIRTIO_PCI_ABI_VERSION 0
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/*
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* VirtIO Header, located in BAR 0.
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*/
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#define VIRTIO_PCI_HOST_FEATURES 0 /* host's supported features (32bit, RO)*/
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#define VIRTIO_PCI_GUEST_FEATURES 4 /* guest's supported features (32, RW) */
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#define VIRTIO_PCI_QUEUE_PFN 8 /* physical address of VQ (32, RW) */
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#define VIRTIO_PCI_QUEUE_NUM 12 /* number of ring entries (16, RO) */
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#define VIRTIO_PCI_QUEUE_SEL 14 /* current VQ selection (16, RW) */
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#define VIRTIO_PCI_QUEUE_NOTIFY 16 /* notify host regarding VQ (16, RW) */
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#define VIRTIO_PCI_STATUS 18 /* device status register (8, RW) */
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#define VIRTIO_PCI_ISR 19 /* interrupt status register, reading
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* also clears the register (8, RO) */
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/* Only if MSIX is enabled: */
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#define VIRTIO_MSI_CONFIG_VECTOR 20 /* configuration change vector (16, RW) */
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#define VIRTIO_MSI_QUEUE_VECTOR 22 /* vector for selected VQ notifications
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(16, RW) */
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/* The bit of the ISR which indicates a device has an interrupt. */
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#define VIRTIO_PCI_ISR_INTR 0x1
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/* The bit of the ISR which indicates a device configuration change. */
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#define VIRTIO_PCI_ISR_CONFIG 0x2
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/* Vector value used to disable MSI for queue. */
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#define VIRTIO_MSI_NO_VECTOR 0xFFFF
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/* VirtIO device IDs. */
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#define VIRTIO_ID_NETWORK 0x01
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#define VIRTIO_ID_BLOCK 0x02
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#define VIRTIO_ID_CONSOLE 0x03
|
||||
#define VIRTIO_ID_ENTROPY 0x04
|
||||
#define VIRTIO_ID_BALLOON 0x05
|
||||
#define VIRTIO_ID_IOMEMORY 0x06
|
||||
#define VIRTIO_ID_9P 0x09
|
||||
|
||||
/* Status byte for guest to report progress. */
|
||||
#define VIRTIO_CONFIG_STATUS_RESET 0x00
|
||||
#define VIRTIO_CONFIG_STATUS_ACK 0x01
|
||||
#define VIRTIO_CONFIG_STATUS_DRIVER 0x02
|
||||
#define VIRTIO_CONFIG_STATUS_DRIVER_OK 0x04
|
||||
#define VIRTIO_CONFIG_STATUS_FEATURES_OK 0x08
|
||||
#define VIRTIO_CONFIG_STATUS_FAILED 0x80
|
||||
|
||||
/*
|
||||
* Each virtqueue indirect descriptor list must be physically contiguous.
|
||||
* To allow us to malloc(9) each list individually, limit the number
|
||||
* supported to what will fit in one page. With 4KB pages, this is a limit
|
||||
* of 256 descriptors. If there is ever a need for more, we can switch to
|
||||
* contigmalloc(9) for the larger allocations, similar to what
|
||||
* bus_dmamem_alloc(9) does.
|
||||
*
|
||||
* Note the sizeof(struct vring_desc) is 16 bytes.
|
||||
*/
|
||||
#define VIRTIO_MAX_INDIRECT ((int) (PAGE_SIZE / 16))
|
||||
|
||||
#define VIRTIO_SCSI_F_INOUT 0
|
||||
|
||||
/* Do we get callbacks when the ring is completely used, even if we've
|
||||
* suppressed them? */
|
||||
#define VIRTIO_F_NOTIFY_ON_EMPTY 24
|
||||
|
||||
/* Can the device handle any descriptor layout? */
|
||||
#define VIRTIO_F_ANY_LAYOUT 27
|
||||
|
||||
/* We support indirect buffer descriptors */
|
||||
#define VIRTIO_RING_F_INDIRECT_DESC 28
|
||||
|
||||
#define VIRTIO_F_VERSION_1 32
|
||||
#define VIRTIO_F_IOMMU_PLATFORM 33
|
||||
|
||||
/*
|
||||
* Some VirtIO feature bits (currently bits 28 through 31) are
|
||||
* reserved for the transport being used (eg. virtio_ring), the
|
||||
* rest are per-device feature bits.
|
||||
*/
|
||||
#define VIRTIO_TRANSPORT_F_START 28
|
||||
#define VIRTIO_TRANSPORT_F_END 34
|
||||
|
||||
/* The Guest publishes the used index for which it expects an interrupt
|
||||
* at the end of the avail ring. Host should ignore the avail->flags field. */
|
||||
/* The Host publishes the avail index for which it expects a kick
|
||||
* at the end of the used ring. Guest should ignore the used->flags field. */
|
||||
#define VIRTIO_RING_F_EVENT_IDX 29
|
||||
|
||||
/* Common configuration */
|
||||
#define VIRTIO_PCI_CAP_COMMON_CFG 1
|
||||
/* Notifications */
|
||||
#define VIRTIO_PCI_CAP_NOTIFY_CFG 2
|
||||
/* ISR Status */
|
||||
#define VIRTIO_PCI_CAP_ISR_CFG 3
|
||||
/* Device specific configuration */
|
||||
#define VIRTIO_PCI_CAP_DEVICE_CFG 4
|
||||
/* PCI configuration access */
|
||||
#define VIRTIO_PCI_CAP_PCI_CFG 5
|
||||
|
||||
/* This is the PCI capability header: */
|
||||
struct virtio_pci_cap {
|
||||
uint8_t cap_vndr; /* Generic PCI field: PCI_CAP_ID_VNDR */
|
||||
uint8_t cap_next; /* Generic PCI field: next ptr. */
|
||||
uint8_t cap_len; /* Generic PCI field: capability length */
|
||||
uint8_t cfg_type; /* Identifies the structure. */
|
||||
uint8_t bar; /* Where to find it. */
|
||||
uint8_t padding[3]; /* Pad to full dword. */
|
||||
uint32_t offset; /* Offset within bar. */
|
||||
uint32_t length; /* Length of the structure, in bytes. */
|
||||
};
|
||||
|
||||
struct virtio_pci_notify_cap {
|
||||
struct virtio_pci_cap cap;
|
||||
uint32_t notify_off_multiplier; /* Multiplier for queue_notify_off. */
|
||||
};
|
||||
|
||||
/* Fields in VIRTIO_PCI_CAP_COMMON_CFG: */
|
||||
struct virtio_pci_common_cfg {
|
||||
/* About the whole device. */
|
||||
uint32_t device_feature_select; /* read-write */
|
||||
uint32_t device_feature; /* read-only */
|
||||
uint32_t guest_feature_select; /* read-write */
|
||||
uint32_t guest_feature; /* read-write */
|
||||
uint16_t msix_config; /* read-write */
|
||||
uint16_t num_queues; /* read-only */
|
||||
uint8_t device_status; /* read-write */
|
||||
uint8_t config_generation; /* read-only */
|
||||
|
||||
/* About a specific virtqueue. */
|
||||
uint16_t queue_select; /* read-write */
|
||||
uint16_t queue_size; /* read-write, power of 2. */
|
||||
uint16_t queue_msix_vector; /* read-write */
|
||||
uint16_t queue_enable; /* read-write */
|
||||
uint16_t queue_notify_off; /* read-only */
|
||||
uint32_t queue_desc_lo; /* read-write */
|
||||
uint32_t queue_desc_hi; /* read-write */
|
||||
uint32_t queue_avail_lo; /* read-write */
|
||||
uint32_t queue_avail_hi; /* read-write */
|
||||
uint32_t queue_used_lo; /* read-write */
|
||||
uint32_t queue_used_hi; /* read-write */
|
||||
};
|
||||
|
||||
struct virtio_pci_ops {
|
||||
void (*read_dev_cfg)(struct virtio_dev *hw, size_t offset,
|
||||
void *dst, int len);
|
||||
@ -262,15 +128,6 @@ struct virtio_driver {
|
||||
|
||||
extern struct virtio_driver g_virtio_driver;
|
||||
|
||||
/*
|
||||
* How many bits to shift physical queue address written to QUEUE_PFN.
|
||||
* 12 is historical, and due to x86 page size.
|
||||
*/
|
||||
#define VIRTIO_PCI_QUEUE_ADDR_SHIFT 12
|
||||
|
||||
/* The alignment to use between consumer and producer parts of vring. */
|
||||
#define VIRTIO_PCI_VRING_ALIGN 4096
|
||||
|
||||
static inline int
|
||||
vtpci_with_feature(struct virtio_dev *dev, uint64_t bit)
|
||||
{
|
||||
|
||||
@ -73,10 +73,10 @@ virtio_user_set_status(struct virtio_dev *vdev, uint8_t status)
|
||||
{
|
||||
struct virtio_user_dev *dev = virtio_dev_get_user_dev(vdev);
|
||||
|
||||
if (status & VIRTIO_CONFIG_STATUS_DRIVER_OK) {
|
||||
if (status & VIRTIO_CONFIG_S_DRIVER_OK) {
|
||||
virtio_user_start_device(dev);
|
||||
} else if (status == VIRTIO_CONFIG_STATUS_RESET &&
|
||||
(dev->status & VIRTIO_CONFIG_STATUS_DRIVER_OK)) {
|
||||
} else if (status == VIRTIO_CONFIG_S_RESET &&
|
||||
(dev->status & VIRTIO_CONFIG_S_DRIVER_OK)) {
|
||||
virtio_user_stop_device(dev);
|
||||
}
|
||||
dev->status = status;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user