mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-23 11:04:44 +08:00
52168e60f7
This reverts commite51af66308, which was wrongly hoovered up and submitted about a month after a better fix had already been merged. The better fix is commitcbda1ba898("PCI/iommu: blacklist DMAR on Intel G31/G33 chipsets"), where we do this blacklisting based on the DMI identification for the offending motherboard, since sometimes this chipset (or at least a chipset with the same PCI ID) apparently _does_ actually have an IOMMU. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
#ifndef _ASM_X86_IOMMU_H
|
|
#define _ASM_X86_IOMMU_H
|
|
|
|
extern void pci_iommu_shutdown(void);
|
|
extern void no_iommu_init(void);
|
|
extern struct dma_mapping_ops nommu_dma_ops;
|
|
extern int force_iommu, no_iommu;
|
|
extern int iommu_detected;
|
|
|
|
extern unsigned long iommu_nr_pages(unsigned long addr, unsigned long len);
|
|
|
|
/* 10 seconds */
|
|
#define DMAR_OPERATION_TIMEOUT ((cycles_t) tsc_khz*10*1000)
|
|
|
|
#ifdef CONFIG_GART_IOMMU
|
|
extern int gart_iommu_aperture;
|
|
extern int gart_iommu_aperture_allowed;
|
|
extern int gart_iommu_aperture_disabled;
|
|
|
|
extern void early_gart_iommu_check(void);
|
|
extern void gart_iommu_init(void);
|
|
extern void gart_iommu_shutdown(void);
|
|
extern void __init gart_parse_options(char *);
|
|
extern void gart_iommu_hole_init(void);
|
|
|
|
#else
|
|
#define gart_iommu_aperture 0
|
|
#define gart_iommu_aperture_allowed 0
|
|
#define gart_iommu_aperture_disabled 1
|
|
|
|
static inline void early_gart_iommu_check(void)
|
|
{
|
|
}
|
|
static inline void gart_iommu_init(void)
|
|
{
|
|
}
|
|
static inline void gart_iommu_shutdown(void)
|
|
{
|
|
}
|
|
static inline void gart_parse_options(char *options)
|
|
{
|
|
}
|
|
static inline void gart_iommu_hole_init(void)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#endif /* _ASM_X86_IOMMU_H */
|