Cregit: Linux 5.2: tce.h

Contributors: 4
Author	Tokens	Token Proportion	Commits	Commit Proportion
Jon Mason	124	93.94%	1	25.00%
Randy Dunlap	3	2.27%	1	25.00%
H. Peter Anvin	3	2.27%	1	25.00%
Thomas Gleixner	2	1.52%	1	25.00%
Total	132		4

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * This file is derived from asm-powerpc/tce.h.
 *
 * Copyright (C) IBM Corporation, 2006
 *
 * Author: Muli Ben-Yehuda <muli@il.ibm.com>
 * Author: Jon Mason <jdmason@us.ibm.com>
 */

#ifndef _ASM_X86_TCE_H
#define _ASM_X86_TCE_H

extern unsigned int specified_table_size;
struct iommu_table;

#define TCE_ENTRY_SIZE   8   /* in bytes */

#define TCE_READ_SHIFT   0
#define TCE_WRITE_SHIFT  1
#define TCE_HUBID_SHIFT  2   /* unused */
#define TCE_RSVD_SHIFT   8   /* unused */
#define TCE_RPN_SHIFT    12
#define TCE_UNUSED_SHIFT 48  /* unused */

#define TCE_RPN_MASK     0x0000fffffffff000ULL

extern void tce_build(struct iommu_table *tbl, unsigned long index,
		      unsigned int npages, unsigned long uaddr, int direction);
extern void tce_free(struct iommu_table *tbl, long index, unsigned int npages);
extern void * __init alloc_tce_table(void);
extern void __init free_tce_table(void *tbl);
extern int __init build_tce_table(struct pci_dev *dev, void __iomem *bbar);

#endif /* _ASM_X86_TCE_H */