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_H
21 #define _ASM_POWERPC_DCR_H
26 #ifdef CONFIG_PPC_DCR_NATIVE
27 #include <asm/dcr-native.h>
30 #ifdef CONFIG_PPC_DCR_MMIO
31 #include <asm/dcr-mmio.h>
35 /* Indirection layer for providing both NATIVE and MMIO support. */
37 #if defined(CONFIG_PPC_DCR_NATIVE) && defined(CONFIG_PPC_DCR_MMIO)
39 #include <asm/dcr-generic.h>
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)
49 #ifdef CONFIG_PPC_DCR_NATIVE
50 typedef 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)
57 typedef 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)
65 #endif /* defined(CONFIG_PPC_DCR_NATIVE) && defined(CONFIG_PPC_DCR_MMIO) */
68 * additional helpers to read the DCR * base from the device-tree
71 extern unsigned int dcr_resource_start(const struct device_node *np,
73 extern unsigned int dcr_resource_len(const struct device_node *np,
75 #endif /* CONFIG_PPC_DCR */
76 #endif /* __ASSEMBLY__ */
77 #endif /* __KERNEL__ */
78 #endif /* _ASM_POWERPC_DCR_H */