| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame^] | 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 |
| 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) |
| 56 | #else |
| 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) |
| 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 | */ |
| 70 | struct device_node; |
| 71 | extern unsigned int dcr_resource_start(const struct device_node *np, |
| 72 | unsigned int index); |
| 73 | extern 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 */ |