| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 2 | /* |
| 3 | * (c) Copyright 2006 Benjamin Herrenschmidt, IBM Corp. |
| 4 | * <benh@kernel.crashing.org> |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 5 | */ |
| 6 | |
| 7 | #ifndef _ASM_POWERPC_DCR_H |
| 8 | #define _ASM_POWERPC_DCR_H |
| 9 | #ifdef __KERNEL__ |
| 10 | #ifndef __ASSEMBLY__ |
| 11 | #ifdef CONFIG_PPC_DCR |
| 12 | |
| 13 | #ifdef CONFIG_PPC_DCR_NATIVE |
| 14 | #include <asm/dcr-native.h> |
| 15 | #endif |
| 16 | |
| 17 | #ifdef CONFIG_PPC_DCR_MMIO |
| 18 | #include <asm/dcr-mmio.h> |
| 19 | #endif |
| 20 | |
| 21 | |
| 22 | /* Indirection layer for providing both NATIVE and MMIO support. */ |
| 23 | |
| 24 | #if defined(CONFIG_PPC_DCR_NATIVE) && defined(CONFIG_PPC_DCR_MMIO) |
| 25 | |
| 26 | #include <asm/dcr-generic.h> |
| 27 | |
| 28 | #define DCR_MAP_OK(host) dcr_map_ok_generic(host) |
| 29 | #define dcr_map(dev, dcr_n, dcr_c) dcr_map_generic(dev, dcr_n, dcr_c) |
| 30 | #define dcr_unmap(host, dcr_c) dcr_unmap_generic(host, dcr_c) |
| 31 | #define dcr_read(host, dcr_n) dcr_read_generic(host, dcr_n) |
| 32 | #define dcr_write(host, dcr_n, value) dcr_write_generic(host, dcr_n, value) |
| 33 | |
| 34 | #else |
| 35 | |
| 36 | #ifdef CONFIG_PPC_DCR_NATIVE |
| 37 | typedef dcr_host_native_t dcr_host_t; |
| 38 | #define DCR_MAP_OK(host) dcr_map_ok_native(host) |
| 39 | #define dcr_map(dev, dcr_n, dcr_c) dcr_map_native(dev, dcr_n, dcr_c) |
| 40 | #define dcr_unmap(host, dcr_c) dcr_unmap_native(host, dcr_c) |
| 41 | #define dcr_read(host, dcr_n) dcr_read_native(host, dcr_n) |
| 42 | #define dcr_write(host, dcr_n, value) dcr_write_native(host, dcr_n, value) |
| 43 | #else |
| 44 | typedef dcr_host_mmio_t dcr_host_t; |
| 45 | #define DCR_MAP_OK(host) dcr_map_ok_mmio(host) |
| 46 | #define dcr_map(dev, dcr_n, dcr_c) dcr_map_mmio(dev, dcr_n, dcr_c) |
| 47 | #define dcr_unmap(host, dcr_c) dcr_unmap_mmio(host, dcr_c) |
| 48 | #define dcr_read(host, dcr_n) dcr_read_mmio(host, dcr_n) |
| 49 | #define dcr_write(host, dcr_n, value) dcr_write_mmio(host, dcr_n, value) |
| 50 | #endif |
| 51 | |
| 52 | #endif /* defined(CONFIG_PPC_DCR_NATIVE) && defined(CONFIG_PPC_DCR_MMIO) */ |
| 53 | |
| 54 | /* |
| 55 | * additional helpers to read the DCR * base from the device-tree |
| 56 | */ |
| 57 | struct device_node; |
| 58 | extern unsigned int dcr_resource_start(const struct device_node *np, |
| 59 | unsigned int index); |
| 60 | extern unsigned int dcr_resource_len(const struct device_node *np, |
| 61 | unsigned int index); |
| 62 | #endif /* CONFIG_PPC_DCR */ |
| 63 | #endif /* __ASSEMBLY__ */ |
| 64 | #endif /* __KERNEL__ */ |
| 65 | #endif /* _ASM_POWERPC_DCR_H */ |