diff options
Diffstat (limited to 'include/asm-x86/pci_64.h')
| -rw-r--r-- | include/asm-x86/pci_64.h | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/include/asm-x86/pci_64.h b/include/asm-x86/pci_64.h new file mode 100644 index 000000000000..5da8cb0c0599 --- /dev/null +++ b/include/asm-x86/pci_64.h @@ -0,0 +1,126 @@ +#ifndef __x8664_PCI_H +#define __x8664_PCI_H + +#include <asm/io.h> + +#ifdef __KERNEL__ + +struct pci_sysdata { + int node; /* NUMA node */ + void* iommu; /* IOMMU private data */ +}; + +extern struct pci_bus *pci_scan_bus_with_sysdata(int busno); + +#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 */ + +#include <linux/mm.h> /* for struct page */ + +/* Can be used to override the logic in pci_scan_bus for skipping + already-configured bus numbers - to be used for buggy BIOSes + or architectures with incomplete PCI setup by the loader */ + +#ifdef CONFIG_PCI +extern unsigned int pcibios_assign_all_busses(void); +#else +#define pcibios_assign_all_busses() 0 +#endif +#define pcibios_scan_all_fns(a, b) 0 + +extern unsigned long pci_mem_start; +#define PCIBIOS_MIN_IO 0x1000 +#define PCIBIOS_MIN_MEM (pci_mem_start) + +#define PCIBIOS_MIN_CARDBUS_IO 0x4000 + +void pcibios_config_init(void); +struct pci_bus * pcibios_scan_root(int bus); +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); + +void pcibios_set_master(struct pci_dev *dev); +void pcibios_penalize_isa_irq(int irq, int active); +struct irq_routing_table *pcibios_get_irq_routing_table(void); +int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq); + +#include <linux/types.h> +#include <linux/slab.h> +#include <asm/scatterlist.h> +#include <linux/string.h> +#include <asm/page.h> + +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 + +#include <asm-generic/pci-dma-compat.h> + +#ifdef CONFIG_PCI +static inline void pci_dma_burst_advice(struct pci_dev *pdev, + enum pci_dma_burst_strategy *strat, + unsigned long *strategy_parameter) +{ + *strat = PCI_DMA_BURST_INFINITY; + *strategy_parameter = ~0UL; +} +#endif + +#define HAVE_PCI_MMAP +extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, + enum pci_mmap_state mmap_state, int write_combine); + +#endif /* __KERNEL__ */ + +/* generic pci stuff */ +#ifdef CONFIG_PCI +#include <asm-generic/pci.h> +#endif + +#endif /* __x8664_PCI_H */ |