| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| /* |
| * (c) Copyright 2006 Benjamin Herrenschmidt, IBM Corp. |
| * <benh@kernel.crashing.org> |
| */ |
| |
| #ifndef _ASM_POWERPC_DCR_H |
| #define _ASM_POWERPC_DCR_H |
| #ifdef __KERNEL__ |
| #ifndef __ASSEMBLY__ |
| #ifdef CONFIG_PPC_DCR |
| |
| #ifdef CONFIG_PPC_DCR_NATIVE |
| #include <asm/dcr-native.h> |
| #endif |
| |
| #ifdef CONFIG_PPC_DCR_MMIO |
| #include <asm/dcr-mmio.h> |
| #endif |
| |
| |
| /* Indirection layer for providing both NATIVE and MMIO support. */ |
| |
| #if defined(CONFIG_PPC_DCR_NATIVE) && defined(CONFIG_PPC_DCR_MMIO) |
| |
| #include <asm/dcr-generic.h> |
| |
| #define DCR_MAP_OK(host) dcr_map_ok_generic(host) |
| #define dcr_map(dev, dcr_n, dcr_c) dcr_map_generic(dev, dcr_n, dcr_c) |
| #define dcr_unmap(host, dcr_c) dcr_unmap_generic(host, dcr_c) |
| #define dcr_read(host, dcr_n) dcr_read_generic(host, dcr_n) |
| #define dcr_write(host, dcr_n, value) dcr_write_generic(host, dcr_n, value) |
| |
| #else |
| |
| #ifdef CONFIG_PPC_DCR_NATIVE |
| typedef dcr_host_native_t dcr_host_t; |
| #define DCR_MAP_OK(host) dcr_map_ok_native(host) |
| #define dcr_map(dev, dcr_n, dcr_c) dcr_map_native(dev, dcr_n, dcr_c) |
| #define dcr_unmap(host, dcr_c) dcr_unmap_native(host, dcr_c) |
| #define dcr_read(host, dcr_n) dcr_read_native(host, dcr_n) |
| #define dcr_write(host, dcr_n, value) dcr_write_native(host, dcr_n, value) |
| #else |
| typedef dcr_host_mmio_t dcr_host_t; |
| #define DCR_MAP_OK(host) dcr_map_ok_mmio(host) |
| #define dcr_map(dev, dcr_n, dcr_c) dcr_map_mmio(dev, dcr_n, dcr_c) |
| #define dcr_unmap(host, dcr_c) dcr_unmap_mmio(host, dcr_c) |
| #define dcr_read(host, dcr_n) dcr_read_mmio(host, dcr_n) |
| #define dcr_write(host, dcr_n, value) dcr_write_mmio(host, dcr_n, value) |
| #endif |
| |
| #endif /* defined(CONFIG_PPC_DCR_NATIVE) && defined(CONFIG_PPC_DCR_MMIO) */ |
| |
| /* |
| * additional helpers to read the DCR * base from the device-tree |
| */ |
| struct device_node; |
| extern unsigned int dcr_resource_start(const struct device_node *np, |
| unsigned int index); |
| extern unsigned int dcr_resource_len(const struct device_node *np, |
| unsigned int index); |
| #endif /* CONFIG_PPC_DCR */ |
| #endif /* __ASSEMBLY__ */ |
| #endif /* __KERNEL__ */ |
| #endif /* _ASM_POWERPC_DCR_H */ |
