arch/arm/include/asm/mach/pci.h

Source file repositories/reference/linux-study-clean/arch/arm/include/asm/mach/pci.h

File Facts

System
Linux kernel
Corpus path
arch/arm/include/asm/mach/pci.h
Extension
.h
Size
2164 bytes
Lines
87
Domain
Architecture Layer
Bucket
arch/arm
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.

Dependency Surface

Detected Declarations

Annotated Snippet

struct hw_pci {
	struct pci_ops	*ops;
	int		nr_controllers;
	void		**private_data;
	int		(*setup)(int nr, struct pci_sys_data *);
	int		(*scan)(int nr, struct pci_host_bridge *);
	void		(*preinit)(void);
	void		(*postinit)(void);
	u8		(*swizzle)(struct pci_dev *dev, u8 *pin);
	int		(*map_irq)(const struct pci_dev *dev, u8 slot, u8 pin);
};

/*
 * Per-controller structure
 */
struct pci_sys_data {
	struct list_head node;
	int		busnr;		/* primary bus number			*/
	u64		mem_offset;	/* bus->cpu memory mapping offset	*/
	unsigned long	io_offset;	/* bus->cpu IO mapping offset		*/
	struct pci_bus	*bus;		/* PCI bus				*/
	struct list_head resources;	/* root bus resources (apertures)       */
	struct resource io_res;
	char		io_res_name[12];
					/* Bridge swizzling			*/
	u8		(*swizzle)(struct pci_dev *, u8 *);
					/* IRQ mapping				*/
	int		(*map_irq)(const struct pci_dev *, u8, u8);
	void		*private_data;	/* platform controller private data	*/
};

/*
 * Call this with your hw_pci struct to initialise the PCI system.
 */
void pci_common_init_dev(struct device *, struct hw_pci *);

/*
 * Compatibility wrapper for older platforms that do not care about
 * passing the parent device.
 */
static inline void pci_common_init(struct hw_pci *hw)
{
	pci_common_init_dev(NULL, hw);
}

/*
 * Setup early fixed I/O mapping.
 */
#if defined(CONFIG_PCI)
extern void pci_map_io_early(unsigned long pfn);
#else
static inline void pci_map_io_early(unsigned long pfn) {}
#endif

/*
 * PCI controllers
 */
extern struct pci_ops iop3xx_ops;
extern int iop3xx_pci_setup(int nr, struct pci_sys_data *);
extern void iop3xx_pci_preinit(void);
extern void iop3xx_pci_preinit_cond(void);

extern struct pci_ops dc21285_ops;
extern int dc21285_setup(int nr, struct pci_sys_data *);
extern void dc21285_preinit(void);
extern void dc21285_postinit(void);

#endif /* __ASM_MACH_PCI_H */

Annotation

Implementation Notes