1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * (c) Copyright 2006 Benjamin Herrenschmidt, IBM Corp. 4 * <benh@kernel.crashing.org> 5 */ 6 7 #ifndef _ASM_POWERPC_DCR_H 8 #define _ASM_POWERPC_DCR_H 9 #ifdef __KERNEL__ 10 #ifndef __ASSEMBLY__ 11 #ifdef CONFIG_PPC_DCR 12 13 #include <asm/dcr-native.h> 14 15 typedef dcr_host_native_t dcr_host_t; 16 #define DCR_MAP_OK(host) dcr_map_ok_native(host) 17 #define dcr_map(dev, dcr_n, dcr_c) dcr_map_native(dev, dcr_n, dcr_c) 18 #define dcr_unmap(host, dcr_c) dcr_unmap_native(host, dcr_c) 19 #define dcr_read(host, dcr_n) dcr_read_native(host, dcr_n) 20 #define dcr_write(host, dcr_n, value) dcr_write_native(host, dcr_n, value) 21 22 /* 23 * additional helpers to read the DCR * base from the device-tree 24 */ 25 struct device_node; 26 extern unsigned int dcr_resource_start(const struct device_node *np, 27 unsigned int index); 28 extern unsigned int dcr_resource_len(const struct device_node *np, 29 unsigned int index); 30 #endif /* CONFIG_PPC_DCR */ 31 #endif /* __ASSEMBLY__ */ 32 #endif /* __KERNEL__ */ 33 #endif /* _ASM_POWERPC_DCR_H */ 34