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authorMohsin Kazmi <sykazmi@cisco.com>2020-07-16 12:55:42 +0000
committerBenoƮt Ganne <bganne@cisco.com>2020-08-20 09:33:23 +0000
commita0a68339b783c1663776225c264b309506934722 (patch)
tree0517cc802ecb63e90f5a2878bcea89edf53ac4c1 /src/vnet/devices/virtio/pci.h
parent224735bf090cde43827499405f663f859f82e161 (diff)
virtio: refactor pci device code
Type: refactor Change-Id: I7342178f9ab9adb99b91a4f984bc22bef2ce8021 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
Diffstat (limited to 'src/vnet/devices/virtio/pci.h')
-rw-r--r--src/vnet/devices/virtio/pci.h66
1 files changed, 48 insertions, 18 deletions
diff --git a/src/vnet/devices/virtio/pci.h b/src/vnet/devices/virtio/pci.h
index 8ec1360bc59..dfc0711305a 100644
--- a/src/vnet/devices/virtio/pci.h
+++ b/src/vnet/devices/virtio/pci.h
@@ -20,23 +20,6 @@
#define VIRTIO_PCI_ABI_VERSION 0
/*
- * VirtIO Header, located in BAR 0.
- */
-#define VIRTIO_PCI_HOST_FEATURES 0 /* host's supported features (32bit, RO) */
-#define VIRTIO_PCI_GUEST_FEATURES 4 /* guest's supported features (32, RW) */
-#define VIRTIO_PCI_QUEUE_PFN 8 /* physical address of VQ (32, RW) */
-#define VIRTIO_PCI_QUEUE_NUM 12 /* number of ring entries (16, RO) */
-#define VIRTIO_PCI_QUEUE_SEL 14 /* current VQ selection (16, RW) */
-#define VIRTIO_PCI_QUEUE_NOTIFY 16 /* notify host regarding VQ (16, RW) */
-#define VIRTIO_PCI_STATUS 18 /* device status register (8, RW) */
-#define VIRTIO_PCI_ISR 19 /* interrupt status register, reading
- * also clears the register (8, RO) */
-/* Only if MSIX is enabled: */
-#define VIRTIO_MSI_CONFIG_VECTOR 20 /* configuration change vector (16, RW) */
-#define VIRTIO_MSI_QUEUE_VECTOR 22 /* vector for selected VQ notifications
- (16, RW) */
-
-/*
* Vector value used to disable MSI for queue.
* define in include/linux/virtio_pci.h
* #define VIRTIO_MSI_NO_VECTOR 0xFFFF
@@ -187,6 +170,14 @@ typedef struct
typedef struct
{
+ u8 mac[6];
+ u16 status;
+ u16 max_virtqueue_pairs;
+ u16 mtu;
+} virtio_net_config_t;
+
+typedef struct
+{
u64 addr;
u32 len;
u16 flags;
@@ -215,6 +206,44 @@ typedef struct
/* u16 avail_event; */
} vring_used_t;
+typedef struct _virtio_pci_func
+{
+ void (*read_config) (vlib_main_t * vm, virtio_if_t * vif, void *dst,
+ int len, u32 addr);
+ void (*write_config) (vlib_main_t * vm, virtio_if_t * vif, void *src,
+ int len, u32 addr);
+
+ u64 (*get_device_features) (vlib_main_t * vm, virtio_if_t * vif);
+ u64 (*get_driver_features) (vlib_main_t * vm, virtio_if_t * vif);
+ void (*set_driver_features) (vlib_main_t * vm, virtio_if_t * vif,
+ u64 features);
+
+ u8 (*get_status) (vlib_main_t * vm, virtio_if_t * vif);
+ void (*set_status) (vlib_main_t * vm, virtio_if_t * vif, u8 status);
+ u8 (*device_reset) (vlib_main_t * vm, virtio_if_t * vif);
+
+ u8 (*get_isr) (vlib_main_t * vm, virtio_if_t * vif);
+
+ u16 (*get_queue_size) (vlib_main_t * vm, virtio_if_t * vif, u16 queue_id);
+ void (*set_queue_size) (vlib_main_t * vm, virtio_if_t * vif, u16 queue_id,
+ u16 queue_size);
+ u8 (*setup_queue) (vlib_main_t * vm, virtio_if_t * vif, u16 queue_id,
+ void *p);
+ void (*del_queue) (vlib_main_t * vm, virtio_if_t * vif, u16 queue_id);
+ void (*notify_queue) (vlib_main_t * vm, virtio_if_t * vif, u16 queue_id);
+
+ u16 (*set_config_irq) (vlib_main_t * vm, virtio_if_t * vif, u16 vec);
+ u16 (*set_queue_irq) (vlib_main_t * vm, virtio_if_t * vif, u16 vec,
+ u16 queue_id);
+
+ void (*get_mac) (vlib_main_t * vm, virtio_if_t * vif);
+ void (*set_mac) (vlib_main_t * vm, virtio_if_t * vif);
+ u16 (*get_device_status) (vlib_main_t * vm, virtio_if_t * vif);
+ u16 (*get_max_queue_pairs) (vlib_main_t * vm, virtio_if_t * vif);
+ u16 (*get_mtu) (vlib_main_t * vm, virtio_if_t * vif);
+ void (*device_debug_config_space) (vlib_main_t * vm, virtio_if_t * vif);
+} virtio_pci_func_t;
+
typedef struct
{
u32 addr;
@@ -229,7 +258,8 @@ typedef struct
clib_error_t *error;
} virtio_pci_create_if_args_t;
-extern void debug_device_config_space (vlib_main_t * vm, virtio_if_t * vif);
+extern const virtio_pci_func_t virtio_pci_legacy_func;
+
extern void device_status (vlib_main_t * vm, virtio_if_t * vif);
void virtio_pci_create_if (vlib_main_t * vm,
virtio_pci_create_if_args_t * args);