standard-headers/linux/virtio_pci.h

5  * This can be used with QEMU based VMMs like KVM or Xen.
42 #include "standard-headers/linux/types.h"
43 #include "standard-headers/linux/kernel.h"
47 /* A 32-bit r/o bitmask of the features supported by the host */
50 /* A 32-bit r/w bitmask of features activated by the guest */
53 /* A 32-bit r/w PFN for the currently selected queue */
56 /* A 16-bit r/o queue size for the currently selected queue */
59 /* A 16-bit r/w queue selector */
62 /* A 16-bit r/w queue notifier */
65 /* An 8-bit device status register.  */
68 /* An 8-bit r/o interrupt status register.  Reading the value will return the
70  * a read-and-acknowledge. */
73 /* MSI-X registers: only enabled if MSI-X is enabled. */
74 /* A 16-bit vector for configuration changes. */
76 /* A 16-bit vector for selected queue notifications. */
79 /* The remaining space is defined by each driver as the per-driver
83 #define VIRTIO_PCI_CONFIG(dev)	VIRTIO_PCI_CONFIG_OFF((dev)->msix_enabled)
100 /* Vector value used to disable MSI for queue */
141 	uint16_t vendor_id;	/* Identifies the vendor-specific format. */
161 	uint32_t device_feature_select;	/* read-write */
162 	uint32_t device_feature;		/* read-only */
163 	uint32_t guest_feature_select;	/* read-write */
164 	uint32_t guest_feature;		/* read-write */
165 	uint16_t msix_config;		/* read-write */
166 	uint16_t num_queues;		/* read-only */
167 	uint8_t device_status;		/* read-write */
168 	uint8_t config_generation;		/* read-only */
171 	uint16_t queue_select;		/* read-write */
172 	uint16_t queue_size;		/* read-write, power of 2. */
173 	uint16_t queue_msix_vector;	/* read-write */
174 	uint16_t queue_enable;		/* read-write */
175 	uint16_t queue_notify_off;	/* read-only */
176 	uint32_t queue_desc_lo;		/* read-write */
177 	uint32_t queue_desc_hi;		/* read-write */
178 	uint32_t queue_avail_lo;		/* read-write */
179 	uint32_t queue_avail_hi;		/* read-write */
180 	uint32_t queue_used_lo;		/* read-write */
181 	uint32_t queue_used_hi;		/* read-write */
191 	uint16_t queue_notify_data;	/* read-write */
192 	uint16_t queue_reset;		/* read-write */
194 	uint16_t admin_queue_index;	/* read-only */
195 	uint16_t admin_queue_num;		/* read-only */
272 	 * 1 - SR-IOV
273 	 * 2-65535 - reserved