@@ -40,6 +40,7 @@
#define _LINUX_VIRTIO_PCI_H
#include <linux/types.h>
+#include <linux/kernel.h>
#ifndef VIRTIO_PCI_NO_LEGACY
@@ -240,6 +241,17 @@ struct virtio_pci_cfg_cap {
#define VIRTIO_ADMIN_CMD_LEGACY_DEV_CFG_READ 0x5
#define VIRTIO_ADMIN_CMD_LEGACY_NOTIFY_INFO 0x6
+/* Device parts access commands. */
+#define VIRTIO_ADMIN_CMD_CAP_ID_LIST_QUERY 0x7
+#define VIRTIO_ADMIN_CMD_DEVICE_CAP_GET 0x8
+#define VIRTIO_ADMIN_CMD_DRIVER_CAP_SET 0x9
+#define VIRTIO_ADMIN_CMD_RESOURCE_OBJ_CREATE 0xa
+#define VIRTIO_ADMIN_CMD_RESOURCE_OBJ_DESTROY 0xd
+#define VIRTIO_ADMIN_CMD_DEV_PARTS_METADATA_GET 0xe
+#define VIRTIO_ADMIN_CMD_DEV_PARTS_GET 0xf
+#define VIRTIO_ADMIN_CMD_DEV_PARTS_SET 0x10
+#define VIRTIO_ADMIN_CMD_DEV_MODE_SET 0x11
+
struct virtio_admin_cmd_hdr {
__le16 opcode;
/*
@@ -286,4 +298,123 @@ struct virtio_admin_cmd_notify_info_result {
struct virtio_admin_cmd_notify_info_data entries[VIRTIO_ADMIN_CMD_MAX_NOTIFY_INFO];
};
+#define VIRTIO_DEV_PARTS_CAP 0x0000
+
+struct virtio_dev_parts_cap {
+ __u8 get_parts_resource_objects_limit;
+ __u8 set_parts_resource_objects_limit;
+};
+
+#define MAX_CAP_ID __KERNEL_DIV_ROUND_UP(VIRTIO_DEV_PARTS_CAP + 1, 64)
+
+struct virtio_admin_cmd_query_cap_id_result {
+ __le64 supported_caps[MAX_CAP_ID];
+};
+
+struct virtio_admin_cmd_cap_get_data {
+ __le16 id;
+ __u8 reserved[6];
+};
+
+struct virtio_admin_cmd_cap_set_data {
+ __le16 id;
+ __u8 reserved[6];
+ __u8 cap_specific_data[];
+};
+
+struct virtio_admin_cmd_resource_obj_cmd_hdr {
+ __le16 type;
+ __u8 reserved[2];
+ __le32 id; /* Indicates unique resource object id per resource object type */
+};
+
+struct virtio_admin_cmd_resource_obj_create_data {
+ struct virtio_admin_cmd_resource_obj_cmd_hdr hdr;
+ __le64 flags;
+ __u8 resource_obj_specific_data[];
+};
+
+#define VIRTIO_RESOURCE_OBJ_DEV_PARTS 0
+
+#define VIRTIO_RESOURCE_OBJ_DEV_PARTS_TYPE_GET 0
+#define VIRTIO_RESOURCE_OBJ_DEV_PARTS_TYPE_SET 1
+
+struct virtio_resource_obj_dev_parts {
+ __u8 type;
+ __u8 reserved[7];
+};
+
+#define VIRTIO_ADMIN_CMD_DEV_PARTS_METADATA_TYPE_SIZE 0
+#define VIRTIO_ADMIN_CMD_DEV_PARTS_METADATA_TYPE_COUNT 1
+#define VIRTIO_ADMIN_CMD_DEV_PARTS_METADATA_TYPE_LIST 2
+
+struct virtio_admin_cmd_dev_parts_metadata_data {
+ struct virtio_admin_cmd_resource_obj_cmd_hdr hdr;
+ __u8 type;
+ __u8 reserved[7];
+};
+
+#define VIRTIO_DEV_PART_F_OPTIONAL 0
+
+struct virtio_dev_part_hdr {
+ __le16 part_type;
+ __u8 flags;
+ __u8 reserved;
+ union {
+ struct {
+ __le32 offset;
+ __le32 reserved;
+ } pci_common_cfg;
+ struct {
+ __le16 index;
+ __u8 reserved[6];
+ } vq_index;
+ } selector;
+ __le32 length;
+};
+
+struct virtio_dev_part {
+ struct virtio_dev_part_hdr hdr;
+ __u8 value[];
+};
+
+struct virtio_admin_cmd_dev_parts_metadata_result {
+ union {
+ struct {
+ __le32 size;
+ __le32 reserved;
+ } parts_size;
+ struct {
+ __le32 count;
+ __le32 reserved;
+ } hdr_list_count;
+ struct {
+ __le32 count;
+ __le32 reserved;
+ struct virtio_dev_part_hdr hdrs[];
+ } hdr_list;
+ };
+};
+
+#define VIRTIO_ADMIN_CMD_DEV_PARTS_GET_TYPE_SELECTED 0
+#define VIRTIO_ADMIN_CMD_DEV_PARTS_GET_TYPE_ALL 1
+
+struct virtio_admin_cmd_dev_parts_get_data {
+ struct virtio_admin_cmd_resource_obj_cmd_hdr hdr;
+ __u8 type;
+ __u8 reserved[7];
+ struct virtio_dev_part_hdr hdr_list[];
+};
+
+struct virtio_admin_cmd_dev_parts_set_data {
+ struct virtio_admin_cmd_resource_obj_cmd_hdr hdr;
+ struct virtio_dev_part parts[];
+};
+
+#define VIRTIO_ADMIN_CMD_DEV_MODE_F_STOPPED 0
+
+struct virtio_admin_cmd_dev_mode_set_data {
+ __u8 flags;
+};
+
#endif
Introduce device parts access commands via the admin queue. These commands and their structure adhere to the Virtio 1.4 specification. Signed-off-by: Yishai Hadas <yishaih@nvidia.com> --- include/uapi/linux/virtio_pci.h | 131 ++++++++++++++++++++++++++++++++ 1 file changed, 131 insertions(+)