drivers/net/wireless/ath/ath12k/pci.h

File Facts

System

Linux kernel

Corpus path

drivers/net/wireless/ath/ath12k/pci.h

Extension

.h

Size

5639 bytes

Lines

181

Domain

Driver Families

Bucket

drivers/net

Inferred role

Driver Families: operation-table or driver-model contract

Status

pattern 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.
• Defines an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• Touches user memory; correctness depends on fault-safe copying and privilege boundary handling.
• 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/mhi.h
• linux/pci.h
• core.h

Detected Declarations

• struct ath12k_msi_user
• struct ath12k_msi_config
• struct ath12k_pci_ops
• struct ath12k_pci_device_family_ops
• struct ath12k_pci_reg_base
• struct ath12k_pci
• struct ath12k_pci_driver
• enum ath12k_pci_flags

Annotated Snippet

struct pci_driver driver;
	const struct ath12k_pci_reg_base *reg_base;
};

static inline struct ath12k_pci *ath12k_pci_priv(struct ath12k_base *ab)
{
	return (struct ath12k_pci *)ab->drv_priv;
}

int ath12k_pci_get_user_msi_assignment(struct ath12k_base *ab, char *user_name,
				       int *num_vectors, u32 *user_base_data,
				       u32 *base_vector);
int ath12k_pci_get_msi_irq(struct device *dev, unsigned int vector);
void ath12k_pci_write32(struct ath12k_base *ab, u32 offset, u32 value);
u32 ath12k_pci_read32(struct ath12k_base *ab, u32 offset);
int ath12k_pci_map_service_to_pipe(struct ath12k_base *ab, u16 service_id,
				   u8 *ul_pipe, u8 *dl_pipe);
void ath12k_pci_get_msi_address(struct ath12k_base *ab, u32 *msi_addr_lo,
				u32 *msi_addr_hi);
void ath12k_pci_get_ce_msi_idx(struct ath12k_base *ab, u32 ce_id,
			       u32 *msi_idx);
void ath12k_pci_hif_ce_irq_enable(struct ath12k_base *ab);
void ath12k_pci_hif_ce_irq_disable(struct ath12k_base *ab);
void ath12k_pci_ext_irq_enable(struct ath12k_base *ab);
void ath12k_pci_ext_irq_disable(struct ath12k_base *ab);
int ath12k_pci_hif_suspend(struct ath12k_base *ab);
int ath12k_pci_hif_resume(struct ath12k_base *ab);
void ath12k_pci_stop(struct ath12k_base *ab);
int ath12k_pci_start(struct ath12k_base *ab);
int ath12k_pci_power_up(struct ath12k_base *ab);
void ath12k_pci_power_down(struct ath12k_base *ab, bool is_suspend);
int ath12k_pci_register_driver(const enum ath12k_device_family device_id,
			       struct ath12k_pci_driver *driver);
void ath12k_pci_unregister_driver(const enum ath12k_device_family device_id);
#endif /* ATH12K_PCI_H */

Annotation

• Immediate include surface: `linux/mhi.h`, `linux/pci.h`, `core.h`.
• Detected declarations: `struct ath12k_msi_user`, `struct ath12k_msi_config`, `struct ath12k_pci_ops`, `struct ath12k_pci_device_family_ops`, `struct ath12k_pci_reg_base`, `struct ath12k_pci`, `struct ath12k_pci_driver`, `enum ath12k_pci_flags`.
• Atlas domain: Driver Families / drivers/net.
• Implementation status: pattern implementation candidate.
• This snippet crosses the user/kernel memory boundary; validate fault handling and access checks before translating the pattern.
• 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.