projects / deliverable / linux.git / blame
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|---|---|---|
| 4c75a6f4 BH |
1 | /* |
| 2 | * (c) Copyright 2006 Benjamin Herrenschmidt, IBM Corp. | |
| 3 | * <benh@kernel.crashing.org> | |
| 4 | * | |
| 5 | * This program is free software; you can redistribute it and/or modify | |
| 6 | * it under the terms of the GNU General Public License as published by | |
| 7 | * the Free Software Foundation; either version 2 of the License, or | |
| 8 | * (at your option) any later version. | |
| 9 | * | |
| 10 | * This program is distributed in the hope that it will be useful, | |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
| 13 | * the GNU General Public License for more details. | |
| 14 | * | |
| 15 | * You should have received a copy of the GNU General Public License | |
| 16 | * along with this program; if not, write to the Free Software | |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | */ | |
| 19 | ||
| 20 | #ifndef _ASM_POWERPC_DCR_MMIO_H | |
| 21 | #define _ASM_POWERPC_DCR_MMIO_H | |
| 22 | #ifdef __KERNEL__ | |
| 23 | ||
| 24 | #include <asm/io.h> | |
| 25 | ||
| 0b94a1ee ME |
26 | typedef struct { |
| 27 | void __iomem *token; | |
| 28 | unsigned int stride; | |
| 29 | unsigned int base; | |
| 30 | } dcr_host_t; | |
| 4c75a6f4 BH |
31 | |
| 32 | #define DCR_MAP_OK(host) ((host).token != NULL) | |
| 33 | ||
| 34 | extern dcr_host_t dcr_map(struct device_node *dev, unsigned int dcr_n, | |
| 35 | unsigned int dcr_c); | |
| cdbd3865 | 36 | extern void dcr_unmap(dcr_host_t host, unsigned int dcr_c); |
| 4c75a6f4 BH |
37 | |
| 38 | static inline u32 dcr_read(dcr_host_t host, unsigned int dcr_n) | |
| 39 | { | |
| 83f34df4 | 40 | return in_be32(host.token + ((host.base + dcr_n) * host.stride)); |
| 4c75a6f4 BH |
41 | } |
| 42 | ||
| 43 | static inline void dcr_write(dcr_host_t host, unsigned int dcr_n, u32 value) | |
| 44 | { | |
| 83f34df4 | 45 | out_be32(host.token + ((host.base + dcr_n) * host.stride), value); |
| 4c75a6f4 BH |
46 | } |
| 47 | ||
| 48 | extern u64 of_translate_dcr_address(struct device_node *dev, | |
| 49 | unsigned int dcr_n, | |
| 50 | unsigned int *stride); | |
| 51 | ||
| 52 | #endif /* __KERNEL__ */ | |
| 53 | #endif /* _ASM_POWERPC_DCR_MMIO_H */ | |
| 54 | ||
| 55 |