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/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * (c) Copyright 2006 Benjamin Herrenschmidt, IBM Corp. * <benh@kernel.crashing.org> */ #ifndef _ASM_POWERPC_DCR_MMIO_H #define _ASM_POWERPC_DCR_MMIO_H #ifdef __KERNEL__ #include <asm/io.h> typedef struct { void __iomem *token; unsigned int stride; unsigned int base; } dcr_host_mmio_t; static inline bool dcr_map_ok_mmio(dcr_host_mmio_t host) { return host.token != NULL; } extern dcr_host_mmio_t dcr_map_mmio(struct device_node *dev, unsigned int dcr_n, unsigned int dcr_c); extern void dcr_unmap_mmio(dcr_host_mmio_t host, unsigned int dcr_c); static inline u32 dcr_read_mmio(dcr_host_mmio_t host, unsigned int dcr_n) { return in_be32(host.token + ((host.base + dcr_n) * host.stride)); } static inline void dcr_write_mmio(dcr_host_mmio_t host, unsigned int dcr_n, u32 value) { out_be32(host.token + ((host.base + dcr_n) * host.stride), value); } #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_DCR_MMIO_H */