drivers/staging/media/ipu7/ipu7-bus.h

File Facts

System

Linux kernel

Corpus path

drivers/staging/media/ipu7/ipu7-bus.h

Extension

.h

Size

1769 bytes

Lines

70

Domain

Driver Families

Bucket

drivers/staging

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
• abi/ipu7_fw_boot_abi.h
• ipu7-syscom.h

Detected Declarations

• struct pci_dev
• struct ipu_buttress_ctrl
• struct ipu7_mmu
• struct ipu7_device
• struct ipu7_bus_device
• struct ipu7_auxdrv_data
• enum ipu7_subsys

Annotated Snippet

struct ipu7_bus_device {
	struct auxiliary_device auxdev;
	const struct auxiliary_driver *auxdrv;
	const struct ipu7_auxdrv_data *auxdrv_data;
	struct list_head list;
	enum ipu7_subsys subsys;
	void *pdata;
	struct ipu7_mmu *mmu;
	struct ipu7_device *isp;
	const struct ipu_buttress_ctrl *ctrl;
	u64 dma_mask;
	struct sg_table fw_sgt;
	u32 fw_entry;
	struct ipu7_syscom_context *syscom;
	struct ia_gofo_boot_config *boot_config;
	dma_addr_t boot_config_dma_addr;
	u32 boot_config_size;
};

struct ipu7_auxdrv_data {
	irqreturn_t (*isr)(struct ipu7_bus_device *adev);
	irqreturn_t (*isr_threaded)(struct ipu7_bus_device *adev);
	bool wake_isr_thread;
};

#define to_ipu7_bus_device(_dev)					\
	container_of(to_auxiliary_dev(_dev), struct ipu7_bus_device, auxdev)
#define auxdev_to_adev(_auxdev)					\
	container_of(_auxdev, struct ipu7_bus_device, auxdev)
#define ipu7_bus_get_drvdata(adev) dev_get_drvdata(&(adev)->auxdev.dev)

struct ipu7_bus_device *
ipu7_bus_initialize_device(struct pci_dev *pdev, struct device *parent,
			   void *pdata, const struct ipu_buttress_ctrl *ctrl,
			   const char *name);
int ipu7_bus_add_device(struct ipu7_bus_device *adev);
void ipu7_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`, `abi/ipu7_fw_boot_abi.h`.
• Detected declarations: `struct pci_dev`, `struct ipu_buttress_ctrl`, `struct ipu7_mmu`, `struct ipu7_device`, `struct ipu7_bus_device`, `struct ipu7_auxdrv_data`, `enum ipu7_subsys`.
• Atlas domain: Driver Families / drivers/staging.
• 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.