162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0-or-later */ 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * (c) Copyright 2006 Benjamin Herrenschmidt, IBM Corp. 462306a36Sopenharmony_ci * <benh@kernel.crashing.org> 562306a36Sopenharmony_ci */ 662306a36Sopenharmony_ci 762306a36Sopenharmony_ci#ifndef _ASM_POWERPC_DCR_MMIO_H 862306a36Sopenharmony_ci#define _ASM_POWERPC_DCR_MMIO_H 962306a36Sopenharmony_ci#ifdef __KERNEL__ 1062306a36Sopenharmony_ci 1162306a36Sopenharmony_ci#include <asm/io.h> 1262306a36Sopenharmony_ci 1362306a36Sopenharmony_citypedef struct { 1462306a36Sopenharmony_ci void __iomem *token; 1562306a36Sopenharmony_ci unsigned int stride; 1662306a36Sopenharmony_ci unsigned int base; 1762306a36Sopenharmony_ci} dcr_host_mmio_t; 1862306a36Sopenharmony_ci 1962306a36Sopenharmony_cistatic inline bool dcr_map_ok_mmio(dcr_host_mmio_t host) 2062306a36Sopenharmony_ci{ 2162306a36Sopenharmony_ci return host.token != NULL; 2262306a36Sopenharmony_ci} 2362306a36Sopenharmony_ci 2462306a36Sopenharmony_ciextern dcr_host_mmio_t dcr_map_mmio(struct device_node *dev, 2562306a36Sopenharmony_ci unsigned int dcr_n, 2662306a36Sopenharmony_ci unsigned int dcr_c); 2762306a36Sopenharmony_ciextern void dcr_unmap_mmio(dcr_host_mmio_t host, unsigned int dcr_c); 2862306a36Sopenharmony_ci 2962306a36Sopenharmony_cistatic inline u32 dcr_read_mmio(dcr_host_mmio_t host, unsigned int dcr_n) 3062306a36Sopenharmony_ci{ 3162306a36Sopenharmony_ci return in_be32(host.token + ((host.base + dcr_n) * host.stride)); 3262306a36Sopenharmony_ci} 3362306a36Sopenharmony_ci 3462306a36Sopenharmony_cistatic inline void dcr_write_mmio(dcr_host_mmio_t host, 3562306a36Sopenharmony_ci unsigned int dcr_n, 3662306a36Sopenharmony_ci u32 value) 3762306a36Sopenharmony_ci{ 3862306a36Sopenharmony_ci out_be32(host.token + ((host.base + dcr_n) * host.stride), value); 3962306a36Sopenharmony_ci} 4062306a36Sopenharmony_ci 4162306a36Sopenharmony_ci#endif /* __KERNEL__ */ 4262306a36Sopenharmony_ci#endif /* _ASM_POWERPC_DCR_MMIO_H */ 4362306a36Sopenharmony_ci 4462306a36Sopenharmony_ci 45