1 /* 2 * (c) Copyright 2006 Benjamin Herrenschmidt, IBM Corp. 3 * <benh@kernel.crashing.org> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 13 * the GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 18 */ 19 20 #ifndef _ASM_POWERPC_DCR_GENERIC_H 21 #define _ASM_POWERPC_DCR_GENERIC_H 22 #ifdef __KERNEL__ 23 #ifndef __ASSEMBLY__ 24 25 enum host_type_t {DCR_HOST_MMIO, DCR_HOST_NATIVE, DCR_HOST_INVALID}; 26 27 typedef struct { 28 enum host_type_t type; 29 union { 30 dcr_host_mmio_t mmio; 31 dcr_host_native_t native; 32 } host; 33 } dcr_host_t; 34 35 extern bool dcr_map_ok_generic(dcr_host_t host); 36 37 extern dcr_host_t dcr_map_generic(struct device_node *dev, unsigned int dcr_n, 38 unsigned int dcr_c); 39 extern void dcr_unmap_generic(dcr_host_t host, unsigned int dcr_c); 40 41 extern u32 dcr_read_generic(dcr_host_t host, unsigned int dcr_n); 42 43 extern void dcr_write_generic(dcr_host_t host, unsigned int dcr_n, u32 value); 44 45 #endif /* __ASSEMBLY__ */ 46 #endif /* __KERNEL__ */ 47 #endif /* _ASM_POWERPC_DCR_GENERIC_H */ 48 49 50