drivers/net/can/kvaser_pciefd/kvaser_pciefd.h

Source file repositories/reference/linux-study-clean/drivers/net/can/kvaser_pciefd/kvaser_pciefd.h

File Facts

System
Linux kernel
Corpus path
drivers/net/can/kvaser_pciefd/kvaser_pciefd.h
Extension
.h
Size
2332 bytes
Lines
97
Domain
Driver Families
Bucket
drivers/net
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 kvaser_pciefd_address_offset {
	u32 serdes;
	u32 pci_ien;
	u32 pci_irq;
	u32 sysid;
	u32 loopback;
	u32 kcan_srb_fifo;
	u32 kcan_srb;
	u32 kcan_ch0;
	u32 kcan_ch1;
};

struct kvaser_pciefd_irq_mask {
	u32 kcan_rx0;
	u32 kcan_tx[KVASER_PCIEFD_MAX_CAN_CHANNELS];
	u32 all;
};

struct kvaser_pciefd_dev_ops {
	void (*kvaser_pciefd_write_dma_map)(struct kvaser_pciefd *pcie,
					    dma_addr_t addr, int index);
};

struct kvaser_pciefd_driver_data {
	const struct kvaser_pciefd_address_offset *address_offset;
	const struct kvaser_pciefd_irq_mask *irq_mask;
	const struct kvaser_pciefd_dev_ops *ops;
};

struct kvaser_pciefd_fw_version {
	u8 major;
	u8 minor;
	u16 build;
};

struct kvaser_pciefd_can {
	struct can_priv can;
	struct devlink_port devlink_port;
	struct kvaser_pciefd *kv_pcie;
	void __iomem *reg_base;
	struct can_berr_counter bec;
	u32 ioc;
	u8 cmd_seq;
	u8 tx_max_count;
	u8 tx_idx;
	u8 ack_idx;
	int err_rep_cnt;
	unsigned int completed_tx_pkts;
	unsigned int completed_tx_bytes;
	spinlock_t lock; /* Locks sensitive registers (e.g. MODE) */
	struct timer_list bec_poll_timer;
	struct completion start_comp, flush_comp;
};

struct kvaser_pciefd {
	struct pci_dev *pci;
	void __iomem *reg_base;
	struct kvaser_pciefd_can *can[KVASER_PCIEFD_MAX_CAN_CHANNELS];
	const struct kvaser_pciefd_driver_data *driver_data;
	void *dma_data[KVASER_PCIEFD_DMA_COUNT];
	u8 nr_channels;
	u32 bus_freq;
	u32 freq;
	u32 freq_to_ticks_div;
	struct kvaser_pciefd_fw_version fw_version;
};

extern const struct devlink_ops kvaser_pciefd_devlink_ops;

int kvaser_pciefd_devlink_port_register(struct kvaser_pciefd_can *can);
void kvaser_pciefd_devlink_port_unregister(struct kvaser_pciefd_can *can);
#endif /* _KVASER_PCIEFD_H */

Annotation

Implementation Notes