1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * (c) Copyright 2006 Benjamin Herrenschmidt, IBM Corp. 4*4882a593Smuzhiyun * <benh@kernel.crashing.org> 5*4882a593Smuzhiyun */ 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun #ifndef _ASM_POWERPC_DCR_GENERIC_H 8*4882a593Smuzhiyun #define _ASM_POWERPC_DCR_GENERIC_H 9*4882a593Smuzhiyun #ifdef __KERNEL__ 10*4882a593Smuzhiyun #ifndef __ASSEMBLY__ 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun enum host_type_t {DCR_HOST_MMIO, DCR_HOST_NATIVE, DCR_HOST_INVALID}; 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun typedef struct { 15*4882a593Smuzhiyun enum host_type_t type; 16*4882a593Smuzhiyun union { 17*4882a593Smuzhiyun dcr_host_mmio_t mmio; 18*4882a593Smuzhiyun dcr_host_native_t native; 19*4882a593Smuzhiyun } host; 20*4882a593Smuzhiyun } dcr_host_t; 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun extern bool dcr_map_ok_generic(dcr_host_t host); 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun extern dcr_host_t dcr_map_generic(struct device_node *dev, unsigned int dcr_n, 25*4882a593Smuzhiyun unsigned int dcr_c); 26*4882a593Smuzhiyun extern void dcr_unmap_generic(dcr_host_t host, unsigned int dcr_c); 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun extern u32 dcr_read_generic(dcr_host_t host, unsigned int dcr_n); 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun extern void dcr_write_generic(dcr_host_t host, unsigned int dcr_n, u32 value); 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun #endif /* __ASSEMBLY__ */ 33*4882a593Smuzhiyun #endif /* __KERNEL__ */ 34*4882a593Smuzhiyun #endif /* _ASM_POWERPC_DCR_GENERIC_H */ 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun 37