drivers/media/pci/intel/ipu6/ipu6-bus.h

File Facts

System

Linux kernel

Corpus path

drivers/media/pci/intel/ipu6/ipu6-bus.h

Extension

.h

Size

1514 bytes

Lines

56

Domain

Driver Families

Bucket

drivers/media

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.

• 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.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/auxiliary_bus.h
• linux/container_of.h
• linux/device.h
• linux/irqreturn.h
• linux/list.h
• linux/scatterlist.h
• linux/types.h

Detected Declarations

• struct firmware
• struct pci_dev
• struct ipu6_buttress_ctrl
• struct ipu6_bus_device
• struct ipu6_auxdrv_data

Annotated Snippet

struct ipu6_bus_device {
	struct auxiliary_device auxdev;
	const struct auxiliary_driver *auxdrv;
	const struct ipu6_auxdrv_data *auxdrv_data;
	struct list_head list;
	void *pdata;
	struct ipu6_mmu *mmu;
	struct ipu6_device *isp;
	const struct ipu6_buttress_ctrl *ctrl;
	const struct firmware *fw;
	struct sg_table fw_sgt;
	u64 *pkg_dir;
	dma_addr_t pkg_dir_dma_addr;
	unsigned int pkg_dir_size;
};

struct ipu6_auxdrv_data {
	irqreturn_t (*isr)(struct ipu6_bus_device *adev);
	irqreturn_t (*isr_threaded)(struct ipu6_bus_device *adev);
	bool wake_isr_thread;
};

#define to_ipu6_bus_device(_dev) \
	container_of(to_auxiliary_dev(_dev), struct ipu6_bus_device, auxdev)
#define auxdev_to_adev(_auxdev) \
	container_of(_auxdev, struct ipu6_bus_device, auxdev)
#define ipu6_bus_get_drvdata(adev) dev_get_drvdata(&(adev)->auxdev.dev)

struct ipu6_bus_device *
ipu6_bus_initialize_device(struct pci_dev *pdev, struct device *parent,
			   void *pdata, const struct ipu6_buttress_ctrl *ctrl,
			   char *name);
int ipu6_bus_add_device(struct ipu6_bus_device *adev);
void ipu6_bus_del_devices(struct pci_dev *pdev);

#endif

Annotation

• Immediate include surface: `linux/auxiliary_bus.h`, `linux/container_of.h`, `linux/device.h`, `linux/irqreturn.h`, `linux/list.h`, `linux/scatterlist.h`, `linux/types.h`.
• Detected declarations: `struct firmware`, `struct pci_dev`, `struct ipu6_buttress_ctrl`, `struct ipu6_bus_device`, `struct ipu6_auxdrv_data`.
• Atlas domain: Driver Families / drivers/media.
• Implementation status: source implementation candidate.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.