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_GENERIC_H 8 #define _ASM_POWERPC_DCR_GENERIC_H 9 #ifdef __KERNEL__ 10 #ifndef __ASSEMBLY__ 11 12 enum host_type_t {DCR_HOST_MMIO, DCR_HOST_NATIVE, DCR_HOST_INVALID}; 13 14 typedef struct { 15 enum host_type_t type; 16 union { 17 dcr_host_mmio_t mmio; 18 dcr_host_native_t native; 19 } host; 20 } dcr_host_t; 21 22 extern bool dcr_map_ok_generic(dcr_host_t host); 23 24 extern dcr_host_t dcr_map_generic(struct device_node *dev, unsigned int dcr_n, 25 unsigned int dcr_c); 26 extern void dcr_unmap_generic(dcr_host_t host, unsigned int dcr_c); 27 28 extern u32 dcr_read_generic(dcr_host_t host, unsigned int dcr_n); 29 30 extern void dcr_write_generic(dcr_host_t host, unsigned int dcr_n, u32 value); 31 32 #endif /* __ASSEMBLY__ */ 33 #endif /* __KERNEL__ */ 34 #endif /* _ASM_POWERPC_DCR_GENERIC_H */ 35 36 37