drivers/net/wwan/t7xx/t7xx_modem_ops.h

File Facts

System

Linux kernel

Corpus path

drivers/net/wwan/t7xx/t7xx_modem_ops.h

Extension

.h

Size

2513 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.

• 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 or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/spinlock.h
• linux/types.h
• linux/workqueue.h
• t7xx_hif_cldma.h
• t7xx_pci.h

Detected Declarations

• struct mtk_runtime_feature
• struct t7xx_sys_info
• struct t7xx_modem
• enum hif_ex_stage
• enum md_event_id
• enum reset_type

Annotated Snippet

struct mtk_runtime_feature {
	u8				feature_id;
	u8				support_info;
	u8				reserved[2];
	__le32				data_len;
	__le32				data[];
};

enum md_event_id {
	FSM_PRE_START,
	FSM_START,
	FSM_READY,
};

struct t7xx_sys_info {
	bool				ready;
	bool				handshake_ongoing;
	u8				feature_set[FEATURE_COUNT];
	struct t7xx_port		*ctl_port;
};

struct t7xx_modem {
	struct cldma_ctrl		*md_ctrl[CLDMA_NUM];
	struct t7xx_pci_dev		*t7xx_dev;
	struct t7xx_sys_info		core_md;
	struct t7xx_sys_info		core_ap;
	bool				md_init_finish;
	bool				rgu_irq_asserted;
	struct workqueue_struct		*handshake_wq;
	struct work_struct		handshake_work;
	struct work_struct		ap_handshake_work;
	struct t7xx_fsm_ctl		*fsm_ctl;
	struct port_proxy		*port_prox;
	unsigned int			exp_id;
	spinlock_t			exp_lock; /* Protects exception events */
};

enum reset_type {
	FLDR,
	PLDR,
	FASTBOOT,
};

void t7xx_md_exception_handshake(struct t7xx_modem *md);
void t7xx_md_event_notify(struct t7xx_modem *md, enum md_event_id evt_id);
int t7xx_md_reset(struct t7xx_pci_dev *t7xx_dev);
int t7xx_md_init(struct t7xx_pci_dev *t7xx_dev);
void t7xx_md_exit(struct t7xx_pci_dev *t7xx_dev);
void t7xx_clear_rgu_irq(struct t7xx_pci_dev *t7xx_dev);
int t7xx_reset_device(struct t7xx_pci_dev *t7xx_dev, enum reset_type type);
int t7xx_pci_mhccif_isr(struct t7xx_pci_dev *t7xx_dev);

#endif	/* __T7XX_MODEM_OPS_H__ */

Annotation

• Immediate include surface: `linux/spinlock.h`, `linux/types.h`, `linux/workqueue.h`, `t7xx_hif_cldma.h`, `t7xx_pci.h`.
• Detected declarations: `struct mtk_runtime_feature`, `struct t7xx_sys_info`, `struct t7xx_modem`, `enum hif_ex_stage`, `enum md_event_id`, `enum reset_type`.
• Atlas domain: Driver Families / drivers/net.
• Implementation status: source implementation candidate.

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.