projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1a59d1b8 | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| 4c75a6f4 BH |
2 | /* |
| 3 | * (c) Copyright 2006 Benjamin Herrenschmidt, IBM Corp. | |
| 4 | * <benh@kernel.crashing.org> | |
| 4c75a6f4 BH |
5 | */ |
| 6 | ||
| 7 | #ifndef _ASM_POWERPC_DCR_MMIO_H | |
| 8 | #define _ASM_POWERPC_DCR_MMIO_H | |
| 9 | #ifdef __KERNEL__ | |
| 10 | ||
| 11 | #include <asm/io.h> | |
| 12 | ||
| 0b94a1ee ME |
13 | typedef struct { |
| 14 | void __iomem *token; | |
| 15 | unsigned int stride; | |
| 16 | unsigned int base; | |
| b786af11 | 17 | } dcr_host_mmio_t; |
| 4c75a6f4 | 18 | |
| b786af11 SN |
19 | static inline bool dcr_map_ok_mmio(dcr_host_mmio_t host) |
| 20 | { | |
| 21 | return host.token != NULL; | |
| 22 | } | |
| 4c75a6f4 | 23 | |
| b786af11 SN |
24 | extern dcr_host_mmio_t dcr_map_mmio(struct device_node *dev, |
| 25 | unsigned int dcr_n, | |
| 26 | unsigned int dcr_c); | |
| 27 | extern void dcr_unmap_mmio(dcr_host_mmio_t host, unsigned int dcr_c); | |
| 4c75a6f4 | 28 | |
| b786af11 | 29 | static inline u32 dcr_read_mmio(dcr_host_mmio_t host, unsigned int dcr_n) |
| 4c75a6f4 | 30 | { |
| 83f34df4 | 31 | return in_be32(host.token + ((host.base + dcr_n) * host.stride)); |
| 4c75a6f4 BH |
32 | } |
| 33 | ||
| b786af11 SN |
34 | static inline void dcr_write_mmio(dcr_host_mmio_t host, |
| 35 | unsigned int dcr_n, | |
| 36 | u32 value) | |
| 4c75a6f4 | 37 | { |
| 83f34df4 | 38 | out_be32(host.token + ((host.base + dcr_n) * host.stride), value); |
| 4c75a6f4 BH |
39 | } |
| 40 | ||
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41 | #endif /* __KERNEL__ */ |
| 42 | #endif /* _ASM_POWERPC_DCR_MMIO_H */ | |
| 43 | ||
| 44 |