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