dm/VBS-U: add virtio 1.0 data structures
This patch adds virtio 1.0 data structures and macros according to virtio spec v1.0 cs4. Part of them are referenced from Linux's BSD-licensed include/uapi/linux/virtio_pci.h Signed-off-by: Jian Jun Chen <jian.jun.chen@intel.com> Reviewed-by: Hao Li <hao.l.li@intel.com> Reviewed-by: Zhao Yakui <yakui.zhao@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Jian Jun Chen
Jack Ren
parent
5e3dca4c0c
commit
5e613efd95
|
|
@ -284,6 +284,12 @@ struct vring_used {
|
||||||
/* guest OS driver is loaded */
|
/* guest OS driver is loaded */
|
||||||
#define VIRTIO_CR_STATUS_DRIVER_OK 0x04
|
#define VIRTIO_CR_STATUS_DRIVER_OK 0x04
|
||||||
/* guest OS driver ready */
|
/* guest OS driver ready */
|
||||||
|
#define VIRTIO_CR_STATUS_FEATURES_OK 0x08
|
||||||
|
/* features negotiation complete */
|
||||||
|
#define VIRTIO_CR_STATUS_NEEDS_RESET 0x40
|
||||||
|
/* device experienced an error and cannot
|
||||||
|
* recover, guest driver must reset it
|
||||||
|
*/
|
||||||
#define VIRTIO_CR_STATUS_FAILED 0x80
|
#define VIRTIO_CR_STATUS_FAILED 0x80
|
||||||
/* guest has given up on this dev */
|
/* guest has given up on this dev */
|
||||||
|
|
||||||
|
|
@ -307,6 +313,9 @@ struct vring_used {
|
||||||
#define VIRTIO_RING_F_INDIRECT_DESC (1 << 28)
|
#define VIRTIO_RING_F_INDIRECT_DESC (1 << 28)
|
||||||
#define VIRTIO_RING_F_EVENT_IDX (1 << 29)
|
#define VIRTIO_RING_F_EVENT_IDX (1 << 29)
|
||||||
|
|
||||||
|
/* v1.0 compliant. */
|
||||||
|
#define VIRTIO_F_VERSION_1 (1UL << 32)
|
||||||
|
|
||||||
/* From section 2.3, "Virtqueue Configuration", of the virtio specification */
|
/* From section 2.3, "Virtqueue Configuration", of the virtio specification */
|
||||||
/**
|
/**
|
||||||
* @brief Calculate size of a virtual ring.
|
* @brief Calculate size of a virtual ring.
|
||||||
|
|
@ -369,6 +378,87 @@ struct virtio_vq_info;
|
||||||
#define VIRTIO_EVENT_IDX 0x02 /* use the event-index values */
|
#define VIRTIO_EVENT_IDX 0x02 /* use the event-index values */
|
||||||
#define VIRTIO_BROKED 0x08 /* ??? */
|
#define VIRTIO_BROKED 0x08 /* ??? */
|
||||||
|
|
||||||
|
/* 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 configuration */
|
||||||
|
#define VIRTIO_PCI_CAP_DEVICE_CFG 4
|
||||||
|
/* PCI configuration access */
|
||||||
|
#define VIRTIO_PCI_CAP_PCI_CFG 5
|
||||||
|
|
||||||
|
#define VIRTIO_COMMON_DFSELECT 0
|
||||||
|
#define VIRTIO_COMMON_DF 4
|
||||||
|
#define VIRTIO_COMMON_GFSELECT 8
|
||||||
|
#define VIRTIO_COMMON_GF 12
|
||||||
|
#define VIRTIO_COMMON_MSIX 16
|
||||||
|
#define VIRTIO_COMMON_NUMQ 18
|
||||||
|
#define VIRTIO_COMMON_STATUS 20
|
||||||
|
#define VIRTIO_COMMON_CFGGENERATION 21
|
||||||
|
#define VIRTIO_COMMON_Q_SELECT 22
|
||||||
|
#define VIRTIO_COMMON_Q_SIZE 24
|
||||||
|
#define VIRTIO_COMMON_Q_MSIX 26
|
||||||
|
#define VIRTIO_COMMON_Q_ENABLE 28
|
||||||
|
#define VIRTIO_COMMON_Q_NOFF 30
|
||||||
|
#define VIRTIO_COMMON_Q_DESCLO 32
|
||||||
|
#define VIRTIO_COMMON_Q_DESCHI 36
|
||||||
|
#define VIRTIO_COMMON_Q_AVAILLO 40
|
||||||
|
#define VIRTIO_COMMON_Q_AVAILHI 44
|
||||||
|
#define VIRTIO_COMMON_Q_USEDLO 48
|
||||||
|
#define VIRTIO_COMMON_Q_USEDHI 52
|
||||||
|
|
||||||
|
/* 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 */
|
||||||
|
};
|
||||||
|
|
||||||
|
/* 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. */
|
||||||
|
};
|
||||||
|
|
||||||
|
/* Fields in VIRTIO_PCI_CAP_NOTIFY_CFG: */
|
||||||
|
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_PCI_CFG: */
|
||||||
|
struct virtio_pci_cfg_cap {
|
||||||
|
struct virtio_pci_cap cap;
|
||||||
|
uint8_t pci_cfg_data[4]; /* Data for BAR access. */
|
||||||
|
};
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* @brief Base component to any virtio device
|
* @brief Base component to any virtio device
|
||||||
*/
|
*/
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue