| 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 | * This file is derived from asm-powerpc/tce.h. |
| 4 | * |
| 5 | * Copyright (C) IBM Corporation, 2006 |
| 6 | * |
| 7 | * Author: Muli Ben-Yehuda <muli@il.ibm.com> |
| 8 | * Author: Jon Mason <jdmason@us.ibm.com> |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 9 | */ |
| 10 | |
| 11 | #ifndef _ASM_X86_TCE_H |
| 12 | #define _ASM_X86_TCE_H |
| 13 | |
| 14 | extern unsigned int specified_table_size; |
| 15 | struct iommu_table; |
| 16 | |
| 17 | #define TCE_ENTRY_SIZE 8 /* in bytes */ |
| 18 | |
| 19 | #define TCE_READ_SHIFT 0 |
| 20 | #define TCE_WRITE_SHIFT 1 |
| 21 | #define TCE_HUBID_SHIFT 2 /* unused */ |
| 22 | #define TCE_RSVD_SHIFT 8 /* unused */ |
| 23 | #define TCE_RPN_SHIFT 12 |
| 24 | #define TCE_UNUSED_SHIFT 48 /* unused */ |
| 25 | |
| 26 | #define TCE_RPN_MASK 0x0000fffffffff000ULL |
| 27 | |
| 28 | extern void tce_build(struct iommu_table *tbl, unsigned long index, |
| 29 | unsigned int npages, unsigned long uaddr, int direction); |
| 30 | extern void tce_free(struct iommu_table *tbl, long index, unsigned int npages); |
| 31 | extern void * __init alloc_tce_table(void); |
| 32 | extern void __init free_tce_table(void *tbl); |
| 33 | extern int __init build_tce_table(struct pci_dev *dev, void __iomem *bbar); |
| 34 | |
| 35 | #endif /* _ASM_X86_TCE_H */ |