mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-16 01:04:08 +08:00
bff6547bb6
This patch makes it possible to compile Calgary in but not use it by default. In this mode, use 'iommu=calgary' to activate it. Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Jon Mason <jdmason@kudzu.us> Signed-off-by: Andi Kleen <ak@suse.de>
65 lines
2.1 KiB
C
65 lines
2.1 KiB
C
/*
|
|
* Derived from include/asm-powerpc/iommu.h
|
|
*
|
|
* Copyright (C) IBM Corporation, 2006
|
|
*
|
|
* Author: Jon Mason <jdmason@us.ibm.com>
|
|
* Author: Muli Ben-Yehuda <muli@il.ibm.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifndef _ASM_X86_64_CALGARY_H
|
|
#define _ASM_X86_64_CALGARY_H
|
|
|
|
#include <linux/spinlock.h>
|
|
#include <linux/device.h>
|
|
#include <linux/dma-mapping.h>
|
|
#include <asm/types.h>
|
|
|
|
struct iommu_table {
|
|
unsigned long it_base; /* mapped address of tce table */
|
|
unsigned long it_hint; /* Hint for next alloc */
|
|
unsigned long *it_map; /* A simple allocation bitmap for now */
|
|
void __iomem *bbar; /* Bridge BAR */
|
|
u64 tar_val; /* Table Address Register */
|
|
struct timer_list watchdog_timer;
|
|
spinlock_t it_lock; /* Protects it_map */
|
|
unsigned int it_size; /* Size of iommu table in entries */
|
|
unsigned char it_busno; /* Bus number this table belongs to */
|
|
};
|
|
|
|
#define TCE_TABLE_SIZE_UNSPECIFIED ~0
|
|
#define TCE_TABLE_SIZE_64K 0
|
|
#define TCE_TABLE_SIZE_128K 1
|
|
#define TCE_TABLE_SIZE_256K 2
|
|
#define TCE_TABLE_SIZE_512K 3
|
|
#define TCE_TABLE_SIZE_1M 4
|
|
#define TCE_TABLE_SIZE_2M 5
|
|
#define TCE_TABLE_SIZE_4M 6
|
|
#define TCE_TABLE_SIZE_8M 7
|
|
|
|
extern int use_calgary;
|
|
|
|
#ifdef CONFIG_CALGARY_IOMMU
|
|
extern int calgary_iommu_init(void);
|
|
extern void detect_calgary(void);
|
|
#else
|
|
static inline int calgary_iommu_init(void) { return 1; }
|
|
static inline void detect_calgary(void) { return; }
|
|
#endif
|
|
|
|
#endif /* _ASM_X86_64_CALGARY_H */
|