arch/mips/include/asm/mach-lantiq/lantiq.h

File Facts

System

Linux kernel

Corpus path

arch/mips/include/asm/mach-lantiq/lantiq.h

Extension

.h

Size

1649 bytes

Lines

56

Domain

Architecture Layer

Bucket

arch/mips

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

Dependency Surface

• linux/irq.h
• linux/device.h
• linux/clk.h

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#ifndef _LANTIQ_H__
#define _LANTIQ_H__

#include <linux/irq.h>
#include <linux/device.h>
#include <linux/clk.h>

/* generic reg access functions */
#define ltq_r32(reg)		__raw_readl(reg)
#define ltq_w32(val, reg)	__raw_writel(val, reg)
#define ltq_w32_mask(clear, set, reg)	\
	ltq_w32((ltq_r32(reg) & ~(clear)) | (set), reg)
#define ltq_r8(reg)		__raw_readb(reg)
#define ltq_w8(val, reg)	__raw_writeb(val, reg)

/* register access macros for EBU and CGU */
#define ltq_ebu_w32(x, y)	ltq_w32((x), ltq_ebu_membase + (y))
#define ltq_ebu_r32(x)		ltq_r32(ltq_ebu_membase + (x))
#define ltq_ebu_w32_mask(x, y, z) \
	ltq_w32_mask(x, y, ltq_ebu_membase + (z))
extern __iomem void *ltq_ebu_membase;

/* spinlock all ebu i/o */
extern spinlock_t ebu_lock;

/* some irq helpers */
extern void ltq_disable_irq(struct irq_data *data);
extern void ltq_mask_and_ack_irq(struct irq_data *data);
extern void ltq_enable_irq(struct irq_data *data);
extern int ltq_eiu_get_irq(int exin);

/* clock handling */
extern int clk_activate(struct clk *clk);
extern void clk_deactivate(struct clk *clk);
extern struct clk *clk_get_cpu(void);
extern struct clk *clk_get_fpi(void);
extern struct clk *clk_get_io(void);
extern struct clk *clk_get_ppe(void);

/* find out what bootsource we have */
extern unsigned char ltq_boot_select(void);
/* find out the soc type */
extern int ltq_soc_type(void);

#define IOPORT_RESOURCE_START	0x10000000
#define IOPORT_RESOURCE_END	0xffffffff
#define IOMEM_RESOURCE_START	0x10000000
#define IOMEM_RESOURCE_END	0xffffffff

#endif

Annotation

• Immediate include surface: `linux/irq.h`, `linux/device.h`, `linux/clk.h`.
• Atlas domain: Architecture Layer / arch/mips.
• 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.