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| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|---|
| 2 | #ifndef __ASM_SH_IO_TRAPPED_H |
| 3 | #define __ASM_SH_IO_TRAPPED_H |
| 4 | |
| 5 | #include <linux/list.h> |
| 6 | #include <linux/ioport.h> |
| 7 | #include <asm/page.h> |
| 8 | |
| 9 | #define IO_TRAPPED_MAGIC 0xfeedbeef |
| 10 | |
| 11 | struct trapped_io { |
| 12 | unsigned int magic; |
| 13 | struct resource *resource; |
| 14 | unsigned int num_resources; |
| 15 | unsigned int minimum_bus_width; |
| 16 | struct list_head list; |
| 17 | void __iomem *virt_base; |
| 18 | } __aligned(PAGE_SIZE); |
| 19 | |
| 20 | #ifdef CONFIG_IO_TRAPPED |
| 21 | int register_trapped_io(struct trapped_io *tiop); |
| 22 | int handle_trapped_io(struct pt_regs *regs, unsigned long address); |
| 23 | |
| 24 | void __iomem *match_trapped_io_handler(struct list_head *list, |
| 25 | unsigned long offset, |
| 26 | unsigned long size); |
| 27 | |
| 28 | #ifdef CONFIG_HAS_IOMEM |
| 29 | extern struct list_head trapped_mem; |
| 30 | |
| 31 | static inline void __iomem * |
| 32 | __ioremap_trapped(unsigned long offset, unsigned long size) |
| 33 | { |
| 34 | return match_trapped_io_handler(&trapped_mem, offset, size); |
| 35 | } |
| 36 | #else |
| 37 | #define __ioremap_trapped(offset, size) NULL |
| 38 | #endif |
| 39 | |
| 40 | #ifdef CONFIG_HAS_IOPORT_MAP |
| 41 | extern struct list_head trapped_io; |
| 42 | |
| 43 | static inline void __iomem * |
| 44 | __ioport_map_trapped(unsigned long offset, unsigned long size) |
| 45 | { |
| 46 | return match_trapped_io_handler(&trapped_io, offset, size); |
| 47 | } |
| 48 | #else |
| 49 | #define __ioport_map_trapped(offset, size) NULL |
| 50 | #endif |
| 51 | |
| 52 | #else |
| 53 | #define register_trapped_io(tiop) (-1) |
| 54 | #define handle_trapped_io(tiop, address) 0 |
| 55 | #define __ioremap_trapped(offset, size) NULL |
| 56 | #define __ioport_map_trapped(offset, size) NULL |
| 57 | #endif |
| 58 | |
| 59 | #endif /* __ASM_SH_IO_TRAPPED_H */ |
| 60 |
Warning: This file is not a C or C++ file. It does not have highlighting.