2 * (c) Copyright 2006 Benjamin Herrenschmidt, IBM Corp.
3 * <benh@kernel.crashing.org>
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.
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.
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
20 #ifndef _ASM_POWERPC_DCR_MMIO_H
21 #define _ASM_POWERPC_DCR_MMIO_H
32 #define DCR_MAP_OK(host) ((host).token != NULL)
34 extern dcr_host_t dcr_map(struct device_node *dev, unsigned int dcr_n,
36 extern void dcr_unmap(dcr_host_t host, unsigned int dcr_c);
38 static inline u32 dcr_read(dcr_host_t host, unsigned int dcr_n)
40 return in_be32(host.token + ((host.base + dcr_n) * host.stride));
43 static inline void dcr_write(dcr_host_t host, unsigned int dcr_n, u32 value)
45 out_be32(host.token + ((host.base + dcr_n) * host.stride), value);
48 extern u64 of_translate_dcr_address(struct device_node *dev,
50 unsigned int *stride);
52 #endif /* __KERNEL__ */
53 #endif /* _ASM_POWERPC_DCR_MMIO_H */