summaryrefslogblamecommitdiff
path: root/arch/x86/kernel/pci-dma.c
blob: 6b77fd872a7aebc3d701ff0b1e747fc33d5eb23f (plain) (tree) 
459121c9ec1e ^

cb5867a5d8ca ^




459121c9ec1e ^

85c246ee16fe ^



f9c258de3494 ^








459121c9ec1e ^











cb5867a5d8ca ^











459121c9ec1e ^

cb5867a5d8ca ^










1

2
3
4
5

6

7
8
9

10
11
12
13
14
15
16
17

18
19
20
21
22
23
24
25
26
27
28

29
30
31
32
33
34
35
36
37
38
39

40

41
42
43
44
45
46
47
48
49
50

                              



                        
 


                                      







                                        










                                                        










                                      
 









                                      
#include <linux/dma-mapping.h>
#include <linux/dmar.h>

#include <asm/gart.h>
#include <asm/calgary.h>

const struct dma_mapping_ops *dma_ops;
EXPORT_SYMBOL(dma_ops);

#ifdef CONFIG_IOMMU_DEBUG
int panic_on_overflow __read_mostly = 1;
int force_iommu __read_mostly = 1;
#else
int panic_on_overflow __read_mostly = 0;
int force_iommu __read_mostly = 0;
#endif

int dma_set_mask(struct device *dev, u64 mask)
{
	if (!dev->dma_mask || !dma_supported(dev, mask))
		return -EIO;

	*dev->dma_mask = mask;

	return 0;
}
EXPORT_SYMBOL(dma_set_mask);

static int __init pci_iommu_init(void)
{
#ifdef CONFIG_CALGARY_IOMMU
	calgary_iommu_init();
#endif

	intel_iommu_init();

#ifdef CONFIG_GART_IOMMU
	gart_iommu_init();
#endif

	no_iommu_init();
	return 0;
}

void pci_iommu_shutdown(void)
{
	gart_iommu_shutdown();
}
/* Must execute after PCI subsystem */
fs_initcall(pci_iommu_init);