70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
#ifndef __x8664_PCI_H
|
|
#define __x8664_PCI_H
|
|
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
|
|
#ifdef CONFIG_CALGARY_IOMMU
|
|
static inline void* pci_iommu(struct pci_bus *bus)
|
|
{
|
|
struct pci_sysdata *sd = bus->sysdata;
|
|
return sd->iommu;
|
|
}
|
|
|
|
static inline void set_pci_iommu(struct pci_bus *bus, void *val)
|
|
{
|
|
struct pci_sysdata *sd = bus->sysdata;
|
|
sd->iommu = val;
|
|
}
|
|
#endif /* CONFIG_CALGARY_IOMMU */
|
|
|
|
|
|
extern int (*pci_config_read)(int seg, int bus, int dev, int fn, int reg, int len, u32 *value);
|
|
extern int (*pci_config_write)(int seg, int bus, int dev, int fn, int reg, int len, u32 value);
|
|
|
|
|
|
|
|
extern void pci_iommu_alloc(void);
|
|
extern int iommu_setup(char *opt);
|
|
|
|
/* The PCI address space does equal the physical memory
|
|
* address space. The networking and block device layers use
|
|
* this boolean for bounce buffer decisions
|
|
*
|
|
* On AMD64 it mostly equals, but we set it to zero if a hardware
|
|
* IOMMU (gart) of sotware IOMMU (swiotlb) is available.
|
|
*/
|
|
#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
|
|
|
|
#if defined(CONFIG_IOMMU) || defined(CONFIG_CALGARY_IOMMU)
|
|
|
|
#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
|
|
dma_addr_t ADDR_NAME;
|
|
#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
|
|
__u32 LEN_NAME;
|
|
#define pci_unmap_addr(PTR, ADDR_NAME) \
|
|
((PTR)->ADDR_NAME)
|
|
#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
|
|
(((PTR)->ADDR_NAME) = (VAL))
|
|
#define pci_unmap_len(PTR, LEN_NAME) \
|
|
((PTR)->LEN_NAME)
|
|
#define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
|
|
(((PTR)->LEN_NAME) = (VAL))
|
|
|
|
#else
|
|
/* No IOMMU */
|
|
|
|
#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
|
|
#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
|
|
#define pci_unmap_addr(PTR, ADDR_NAME) (0)
|
|
#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
|
|
#define pci_unmap_len(PTR, LEN_NAME) (0)
|
|
#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
|
|
|
|
#endif
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
|
|
#endif /* __x8664_PCI_H */
|