/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) 2001 Mike Corrigan & Dave Engebretsen, IBM Corporation
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* Rewrite, cleanup:
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* Copyright (C) 2004 Olof Johansson <olof@lixom.net>, IBM Corporation
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*/
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#ifndef _ASM_POWERPC_TCE_H
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#define _ASM_POWERPC_TCE_H
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#ifdef __KERNEL__
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#include <asm/iommu.h>
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/*
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* Tces come in two formats, one for the virtual bus and a different
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* format for PCI. PCI TCEs can have hardware or software maintianed
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* coherency.
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*/
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#define TCE_VB 0
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#define TCE_PCI 1
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/* TCE page size is 4096 bytes (1 << 12) */
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#define TCE_SHIFT 12
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#define TCE_PAGE_SIZE (1 << TCE_SHIFT)
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#define TCE_ENTRY_SIZE 8 /* each TCE is 64 bits */
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#define TCE_RPN_MASK 0xfffffffffful /* 40-bit RPN (4K pages) */
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#define TCE_RPN_SHIFT 12
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#define TCE_VALID 0x800 /* TCE valid */
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#define TCE_ALLIO 0x400 /* TCE valid for all lpars */
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#define TCE_PCI_WRITE 0x2 /* write from PCI allowed */
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#define TCE_PCI_READ 0x1 /* read from PCI allowed */
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#define TCE_VB_WRITE 0x1 /* write from VB allowed */
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#endif /* __KERNEL__ */
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#endif /* _ASM_POWERPC_TCE_H */
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