diff options
Diffstat (limited to 'linux-headers/linux/virtio_pci.h')
| -rw-r--r-- | linux-headers/linux/virtio_pci.h | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/linux-headers/linux/virtio_pci.h b/linux-headers/linux/virtio_pci.h deleted file mode 100644 index 92624e5310..0000000000 --- a/linux-headers/linux/virtio_pci.h +++ /dev/null @@ -1,192 +0,0 @@ -/* - * Virtio PCI driver - * - * This module allows virtio devices to be used over a virtual PCI device. - * This can be used with QEMU based VMMs like KVM or Xen. - * - * Copyright IBM Corp. 2007 - * - * Authors: - * Anthony Liguori <aliguori@us.ibm.com> - * - * This header is BSD licensed so anyone can use the definitions to implement - * compatible drivers/servers. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of IBM nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#ifndef _LINUX_VIRTIO_PCI_H -#define _LINUX_VIRTIO_PCI_H - -#include <linux/types.h> - -#ifndef VIRTIO_PCI_NO_LEGACY - -/* A 32-bit r/o bitmask of the features supported by the host */ -#define VIRTIO_PCI_HOST_FEATURES 0 - -/* A 32-bit r/w bitmask of features activated by the guest */ -#define VIRTIO_PCI_GUEST_FEATURES 4 - -/* A 32-bit r/w PFN for the currently selected queue */ -#define VIRTIO_PCI_QUEUE_PFN 8 - -/* A 16-bit r/o queue size for the currently selected queue */ -#define VIRTIO_PCI_QUEUE_NUM 12 - -/* A 16-bit r/w queue selector */ -#define VIRTIO_PCI_QUEUE_SEL 14 - -/* A 16-bit r/w queue notifier */ -#define VIRTIO_PCI_QUEUE_NOTIFY 16 - -/* An 8-bit device status register. */ -#define VIRTIO_PCI_STATUS 18 - -/* An 8-bit r/o interrupt status register. Reading the value will return the - * current contents of the ISR and will also clear it. This is effectively - * a read-and-acknowledge. */ -#define VIRTIO_PCI_ISR 19 - -/* MSI-X registers: only enabled if MSI-X is enabled. */ -/* A 16-bit vector for configuration changes. */ -#define VIRTIO_MSI_CONFIG_VECTOR 20 -/* A 16-bit vector for selected queue notifications. */ -#define VIRTIO_MSI_QUEUE_VECTOR 22 - -/* The remaining space is defined by each driver as the per-driver - * configuration space */ -#define VIRTIO_PCI_CONFIG_OFF(msix_enabled) ((msix_enabled) ? 24 : 20) -/* Deprecated: please use VIRTIO_PCI_CONFIG_OFF instead */ -#define VIRTIO_PCI_CONFIG(dev) VIRTIO_PCI_CONFIG_OFF((dev)->msix_enabled) - -/* Virtio ABI version, this must match exactly */ -#define VIRTIO_PCI_ABI_VERSION 0 - -/* 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. - * x86 pagesize again. */ -#define VIRTIO_PCI_VRING_ALIGN 4096 - -#endif /* VIRTIO_PCI_NO_LEGACY */ - -/* The bit of the ISR which indicates a device configuration change. */ -#define VIRTIO_PCI_ISR_CONFIG 0x2 -/* Vector value used to disable MSI for queue */ -#define VIRTIO_MSI_NO_VECTOR 0xffff - -#ifndef VIRTIO_PCI_NO_MODERN - -/* IDs for different capabilities. Must all exist. */ - -/* Common configuration */ -#define VIRTIO_PCI_CAP_COMMON_CFG 1 -/* Notifications */ -#define VIRTIO_PCI_CAP_NOTIFY_CFG 2 -/* ISR access */ -#define VIRTIO_PCI_CAP_ISR_CFG 3 -/* Device specific confiuration */ -#define VIRTIO_PCI_CAP_DEVICE_CFG 4 - -/* This is the PCI capability header: */ -struct virtio_pci_cap { - __u8 cap_vndr; /* Generic PCI field: PCI_CAP_ID_VNDR */ - __u8 cap_next; /* Generic PCI field: next ptr. */ - __u8 cap_len; /* Generic PCI field: capability length */ - __u8 cfg_type; /* Identifies the structure. */ - __u8 bar; /* Where to find it. */ - __u8 padding[3]; /* Pad to full dword. */ - __le32 offset; /* Offset within bar. */ - __le32 length; /* Length of the structure, in bytes. */ -}; - -struct virtio_pci_notify_cap { - struct virtio_pci_cap cap; - __le32 notify_off_multiplier; /* Multiplier for queue_notify_off. */ -}; - -/* Fields in VIRTIO_PCI_CAP_COMMON_CFG: */ -struct virtio_pci_common_cfg { - /* About the whole device. */ - __le32 device_feature_select; /* read-write */ - __le32 device_feature; /* read-only */ - __le32 guest_feature_select; /* read-write */ - __le32 guest_feature; /* read-write */ - __le16 msix_config; /* read-write */ - __le16 num_queues; /* read-only */ - __u8 device_status; /* read-write */ - __u8 config_generation; /* read-only */ - - /* About a specific virtqueue. */ - __le16 queue_select; /* read-write */ - __le16 queue_size; /* read-write, power of 2. */ - __le16 queue_msix_vector; /* read-write */ - __le16 queue_enable; /* read-write */ - __le16 queue_notify_off; /* read-only */ - __le32 queue_desc_lo; /* read-write */ - __le32 queue_desc_hi; /* read-write */ - __le32 queue_avail_lo; /* read-write */ - __le32 queue_avail_hi; /* read-write */ - __le32 queue_used_lo; /* read-write */ - __le32 queue_used_hi; /* read-write */ -}; - -/* Macro versions of offsets for the Old Timers! */ -#define VIRTIO_PCI_CAP_VNDR 0 -#define VIRTIO_PCI_CAP_NEXT 1 -#define VIRTIO_PCI_CAP_LEN 2 -#define VIRTIO_PCI_CAP_CFG_TYPE 3 -#define VIRTIO_PCI_CAP_BAR 4 -#define VIRTIO_PCI_CAP_OFFSET 8 -#define VIRTIO_PCI_CAP_LENGTH 12 - -#define VIRTIO_PCI_NOTIFY_CAP_MULT 16 - - -#define VIRTIO_PCI_COMMON_DFSELECT 0 -#define VIRTIO_PCI_COMMON_DF 4 -#define VIRTIO_PCI_COMMON_GFSELECT 8 -#define VIRTIO_PCI_COMMON_GF 12 -#define VIRTIO_PCI_COMMON_MSIX 16 -#define VIRTIO_PCI_COMMON_NUMQ 18 -#define VIRTIO_PCI_COMMON_STATUS 20 -#define VIRTIO_PCI_COMMON_CFGGENERATION 21 -#define VIRTIO_PCI_COMMON_Q_SELECT 22 -#define VIRTIO_PCI_COMMON_Q_SIZE 24 -#define VIRTIO_PCI_COMMON_Q_MSIX 26 -#define VIRTIO_PCI_COMMON_Q_ENABLE 28 -#define VIRTIO_PCI_COMMON_Q_NOFF 30 -#define VIRTIO_PCI_COMMON_Q_DESCLO 32 -#define VIRTIO_PCI_COMMON_Q_DESCHI 36 -#define VIRTIO_PCI_COMMON_Q_AVAILLO 40 -#define VIRTIO_PCI_COMMON_Q_AVAILHI 44 -#define VIRTIO_PCI_COMMON_Q_USEDLO 48 -#define VIRTIO_PCI_COMMON_Q_USEDHI 52 - -#endif /* VIRTIO_PCI_NO_MODERN */ - -#endif |