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