arch/powerpc/sysdev/mpic.h

File Facts

System

Linux kernel

Corpus path

arch/powerpc/sysdev/mpic.h

Extension

.h

Size

1637 bytes

Lines

61

Domain

Architecture Layer

Bucket

arch/powerpc

Inferred role

Architecture Layer: implementation source

Status

source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
• 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

• No C-style include directives detected by the generator.

Detected Declarations

• function mpic_msi_reserve_hwirq
• function mpic_u3msi_init
• function mpic_pasemi_msi_init
• function mpic_map_error_int
• function mpic_err_int_init
• function mpic_setup_error_int

Annotated Snippet

static inline int mpic_pasemi_msi_init(struct mpic *mpic) { return -1; }
#endif

extern int mpic_set_irq_type(struct irq_data *d, unsigned int flow_type);
extern void mpic_set_vector(unsigned int virq, unsigned int vector);
extern int mpic_set_affinity(struct irq_data *d,
			     const struct cpumask *cpumask, bool force);
extern void mpic_reset_core(int cpu);

#ifdef CONFIG_FSL_SOC
extern int mpic_map_error_int(struct mpic *mpic, unsigned int virq, irq_hw_number_t  hw);
void __init mpic_err_int_init(struct mpic *mpic, irq_hw_number_t irqnum);
int __init mpic_setup_error_int(struct mpic *mpic, int intvec);
#else
static inline int mpic_map_error_int(struct mpic *mpic, unsigned int virq, irq_hw_number_t  hw)
{
	return 0;
}


static inline void mpic_err_int_init(struct mpic *mpic, irq_hw_number_t irqnum)
{
	return;
}

static inline int mpic_setup_error_int(struct mpic *mpic, int intvec)
{
	return -1;
}
#endif

#endif /* _POWERPC_SYSDEV_MPIC_H */

Annotation

• Detected declarations: `function mpic_msi_reserve_hwirq`, `function mpic_u3msi_init`, `function mpic_pasemi_msi_init`, `function mpic_map_error_int`, `function mpic_err_int_init`, `function mpic_setup_error_int`.
• Atlas domain: Architecture Layer / arch/powerpc.
• 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.