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_H 21#define _ASM_POWERPC_DCR_H 22#ifdef __KERNEL__ 23#ifndef __ASSEMBLY__ 24#ifdef CONFIG_PPC_DCR 25 26#ifdef CONFIG_PPC_DCR_NATIVE 27#include <asm/dcr-native.h> 28#endif 29 30#ifdef CONFIG_PPC_DCR_MMIO 31#include <asm/dcr-mmio.h> 32#endif 33 34 35/* Indirection layer for providing both NATIVE and MMIO support. */ 36 37#if defined(CONFIG_PPC_DCR_NATIVE) && defined(CONFIG_PPC_DCR_MMIO) 38 39#include <asm/dcr-generic.h> 40 41#define DCR_MAP_OK(host) dcr_map_ok_generic(host) 42#define dcr_map(dev, dcr_n, dcr_c) dcr_map_generic(dev, dcr_n, dcr_c) 43#define dcr_unmap(host, dcr_c) dcr_unmap_generic(host, dcr_c) 44#define dcr_read(host, dcr_n) dcr_read_generic(host, dcr_n) 45#define dcr_write(host, dcr_n, value) dcr_write_generic(host, dcr_n, value) 46 47#else 48 49#ifdef CONFIG_PPC_DCR_NATIVE 50typedef dcr_host_native_t dcr_host_t; 51#define DCR_MAP_OK(host) dcr_map_ok_native(host) 52#define dcr_map(dev, dcr_n, dcr_c) dcr_map_native(dev, dcr_n, dcr_c) 53#define dcr_unmap(host, dcr_c) dcr_unmap_native(host, dcr_c) 54#define dcr_read(host, dcr_n) dcr_read_native(host, dcr_n) 55#define dcr_write(host, dcr_n, value) dcr_write_native(host, dcr_n, value) 56#else 57typedef dcr_host_mmio_t dcr_host_t; 58#define DCR_MAP_OK(host) dcr_map_ok_mmio(host) 59#define dcr_map(dev, dcr_n, dcr_c) dcr_map_mmio(dev, dcr_n, dcr_c) 60#define dcr_unmap(host, dcr_c) dcr_unmap_mmio(host, dcr_c) 61#define dcr_read(host, dcr_n) dcr_read_mmio(host, dcr_n) 62#define dcr_write(host, dcr_n, value) dcr_write_mmio(host, dcr_n, value) 63#endif 64 65#endif /* defined(CONFIG_PPC_DCR_NATIVE) && defined(CONFIG_PPC_DCR_MMIO) */ 66 67/* 68 * additional helpers to read the DCR * base from the device-tree 69 */ 70struct device_node; 71extern unsigned int dcr_resource_start(const struct device_node *np, 72 unsigned int index); 73extern unsigned int dcr_resource_len(const struct device_node *np, 74 unsigned int index); 75#endif /* CONFIG_PPC_DCR */ 76#endif /* __ASSEMBLY__ */ 77#endif /* __KERNEL__ */ 78#endif /* _ASM_POWERPC_DCR_H */ 79