fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-x86 / pci_64.h
blob9baa46d9f594893a011b9e803566e17f2ac3f150
1 #ifndef __x8664_PCI_H
2 #define __x8664_PCI_H
5 #ifdef __KERNEL__
8 #ifdef CONFIG_CALGARY_IOMMU
9 static inline void* pci_iommu(struct pci_bus *bus)
11 struct pci_sysdata *sd = bus->sysdata;
12 return sd->iommu;
15 static inline void set_pci_iommu(struct pci_bus *bus, void *val)
17 struct pci_sysdata *sd = bus->sysdata;
18 sd->iommu = val;
20 #endif /* CONFIG_CALGARY_IOMMU */
23 extern int (*pci_config_read)(int seg, int bus, int dev, int fn, int reg, int len, u32 *value);
24 extern int (*pci_config_write)(int seg, int bus, int dev, int fn, int reg, int len, u32 value);
28 extern void pci_iommu_alloc(void);
29 extern int iommu_setup(char *opt);
31 /* The PCI address space does equal the physical memory
32 * address space. The networking and block device layers use
33 * this boolean for bounce buffer decisions
35 * On AMD64 it mostly equals, but we set it to zero if a hardware
36 * IOMMU (gart) of sotware IOMMU (swiotlb) is available.
38 #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
40 #if defined(CONFIG_IOMMU) || defined(CONFIG_CALGARY_IOMMU)
42 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
43 dma_addr_t ADDR_NAME;
44 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
45 __u32 LEN_NAME;
46 #define pci_unmap_addr(PTR, ADDR_NAME) \
47 ((PTR)->ADDR_NAME)
48 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
49 (((PTR)->ADDR_NAME) = (VAL))
50 #define pci_unmap_len(PTR, LEN_NAME) \
51 ((PTR)->LEN_NAME)
52 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
53 (((PTR)->LEN_NAME) = (VAL))
55 #else
56 /* No IOMMU */
58 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
59 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
60 #define pci_unmap_addr(PTR, ADDR_NAME) (0)
61 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
62 #define pci_unmap_len(PTR, LEN_NAME) (0)
63 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
65 #endif
67 #endif /* __KERNEL__ */
70 #endif /* __x8664_PCI_H */