/* * (c) Copyright 2006 Benjamin Herrenschmidt, IBM Corp. * <benh@kernel.crashing.org> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See * the GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #ifndef _ASM_POWERPC_DCR_MMIO_H #define _ASM_POWERPC_DCR_MMIO_H #ifdef __KERNEL__ #include <asm/io.h> typedef struct { void __iomem *token; unsigned int stride; unsigned int base; } dcr_host_mmio_t; static inline bool dcr_map_ok_mmio(dcr_host_mmio_t host) { return host.token != NULL; } extern dcr_host_mmio_t dcr_map_mmio(struct device_node *dev, unsigned int dcr_n, unsigned int dcr_c); extern void dcr_unmap_mmio(dcr_host_mmio_t host, unsigned int dcr_c); static inline u32 dcr_read_mmio(dcr_host_mmio_t host, unsigned int dcr_n) { return in_be32(host.token + ((host.base + dcr_n) * host.stride)); } static inline void dcr_write_mmio(dcr_host_mmio_t host, unsigned int dcr_n, u32 value) { out_be32(host.token + ((host.base + dcr_n) * host.stride), value); } #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_DCR_MMIO_H */