drivers/vdpa/octeon_ep/octep_vdpa.h

Source file repositories/reference/linux-study-clean/drivers/vdpa/octeon_ep/octep_vdpa.h

File Facts

System
Linux kernel
Corpus path
drivers/vdpa/octeon_ep/octep_vdpa.h
Extension
.h
Size
4040 bytes
Lines
135
Domain
Driver Families
Bucket
drivers/vdpa
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct octep_vring_info {
	struct vdpa_callback cb;
	void __iomem *notify_addr;
	void __iomem *cb_notify_addr;
	phys_addr_t notify_pa;
};

enum octep_pci_vndr_cfg_type {
	OCTEP_PCI_VNDR_CFG_TYPE_VIRTIO_ID,
	OCTEP_PCI_VNDR_CFG_TYPE_MAX,
};

struct octep_pci_vndr_data {
	struct virtio_pci_vndr_data hdr;
	u8 id;
	u8 bar;
	union {
		u64 data;
		struct {
			u32 offset;
			u32 length;
		};
	};
};

struct octep_hw {
	struct pci_dev *pdev;
	u8 __iomem *base[PCI_STD_NUM_BARS];
	struct virtio_pci_common_cfg __iomem *common_cfg;
	u8 __iomem *dev_cfg;
	u8 __iomem *isr;
	void __iomem *notify_base;
	phys_addr_t notify_base_pa;
	u32 notify_off_multiplier;
	u8 notify_bar;
	struct octep_vring_info *vqs;
	struct vdpa_callback config_cb;
	u64 features;
	u16 nr_vring;
	u32 config_size;
	int requested_irqs;
	int nb_irqs;
	int *irqs;
	u8 dev_id;
};

u8 octep_hw_get_status(struct octep_hw *oct_hw);
void octep_hw_set_status(struct octep_hw *dev, uint8_t status);
void octep_hw_reset(struct octep_hw *oct_hw);
void octep_write_queue_select(struct octep_hw *oct_hw, u16 queue_id);
void octep_notify_queue(struct octep_hw *oct_hw, u16 qid);
void octep_read_dev_config(struct octep_hw *oct_hw, u64 offset, void *dst, int length);
int octep_set_vq_address(struct octep_hw *oct_hw, u16 qid, u64 desc_area, u64 driver_area,
			 u64 device_area);
void octep_set_vq_num(struct octep_hw *oct_hw, u16 qid, u32 num);
void octep_set_vq_ready(struct octep_hw *oct_hw, u16 qid, bool ready);
bool octep_get_vq_ready(struct octep_hw *oct_hw, u16 qid);
int octep_set_vq_state(struct octep_hw *oct_hw, u16 qid, const struct vdpa_vq_state *state);
int octep_get_vq_state(struct octep_hw *oct_hw, u16 qid, struct vdpa_vq_state *state);
u16 octep_get_vq_size(struct octep_hw *oct_hw);
int octep_hw_caps_read(struct octep_hw *oct_hw, struct pci_dev *pdev);
u64 octep_hw_get_dev_features(struct octep_hw *oct_hw);
void octep_hw_set_drv_features(struct octep_hw *oct_hw, u64 features);
u64 octep_hw_get_drv_features(struct octep_hw *oct_hw);
int octep_verify_features(u64 features);

#endif /* __OCTEP_VDPA_H__ */

Annotation

Implementation Notes