60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
#ifndef __ASM_SH_IO_TRAPPED_H
|
||
|
|
#define __ASM_SH_IO_TRAPPED_H
|
||
|
|
|
||
|
|
#include <linux/list.h>
|
||
|
|
#include <linux/ioport.h>
|
||
|
|
#include <asm/page.h>
|
||
|
|
|
||
|
|
#define IO_TRAPPED_MAGIC 0xfeedbeef
|
||
|
|
|
||
|
|
struct trapped_io {
|
||
|
|
unsigned int magic;
|
||
|
|
struct resource *resource;
|
||
|
|
unsigned int num_resources;
|
||
|
|
unsigned int minimum_bus_width;
|
||
|
|
struct list_head list;
|
||
|
|
void __iomem *virt_base;
|
||
|
|
} __aligned(PAGE_SIZE);
|
||
|
|
|
||
|
|
#ifdef CONFIG_IO_TRAPPED
|
||
|
|
int register_trapped_io(struct trapped_io *tiop);
|
||
|
|
int handle_trapped_io(struct pt_regs *regs, unsigned long address);
|
||
|
|
|
||
|
|
void __iomem *match_trapped_io_handler(struct list_head *list,
|
||
|
|
unsigned long offset,
|
||
|
|
unsigned long size);
|
||
|
|
|
||
|
|
#ifdef CONFIG_HAS_IOMEM
|
||
|
|
extern struct list_head trapped_mem;
|
||
|
|
|
||
|
|
static inline void __iomem *
|
||
|
|
__ioremap_trapped(unsigned long offset, unsigned long size)
|
||
|
|
{
|
||
|
|
return match_trapped_io_handler(&trapped_mem, offset, size);
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
#define __ioremap_trapped(offset, size) NULL
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef CONFIG_HAS_IOPORT_MAP
|
||
|
|
extern struct list_head trapped_io;
|
||
|
|
|
||
|
|
static inline void __iomem *
|
||
|
|
__ioport_map_trapped(unsigned long offset, unsigned long size)
|
||
|
|
{
|
||
|
|
return match_trapped_io_handler(&trapped_io, offset, size);
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
#define __ioport_map_trapped(offset, size) NULL
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#else
|
||
|
|
#define register_trapped_io(tiop) (-1)
|
||
|
|
#define handle_trapped_io(tiop, address) 0
|
||
|
|
#define __ioremap_trapped(offset, size) NULL
|
||
|
|
#define __ioport_map_trapped(offset, size) NULL
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* __ASM_SH_IO_TRAPPED_H */
|