4 #include <linux/config.h>
9 #include <linux/mm.h> /* for struct page */
11 /* Can be used to override the logic in pci_scan_bus for skipping
12 already-configured bus numbers - to be used for buggy BIOSes
13 or architectures with incomplete PCI setup by the loader */
16 extern unsigned int pcibios_assign_all_busses(void);
18 #define pcibios_assign_all_busses() 0
20 #define pcibios_scan_all_fns(a, b) 0
22 extern int no_iommu, force_iommu;
24 extern unsigned long pci_mem_start;
25 #define PCIBIOS_MIN_IO 0x1000
26 #define PCIBIOS_MIN_MEM (pci_mem_start)
28 #define PCIBIOS_MIN_CARDBUS_IO 0x4000
30 void pcibios_config_init(void);
31 struct pci_bus * pcibios_scan_root(int bus);
32 extern int (*pci_config_read)(int seg, int bus, int dev, int fn, int reg, int len, u32 *value);
33 extern int (*pci_config_write)(int seg, int bus, int dev, int fn, int reg, int len, u32 value);
35 void pcibios_set_master(struct pci_dev *dev);
36 void pcibios_penalize_isa_irq(int irq, int active);
37 struct irq_routing_table *pcibios_get_irq_routing_table(void);
38 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
40 #include <linux/types.h>
41 #include <linux/slab.h>
42 #include <asm/scatterlist.h>
43 #include <linux/string.h>
45 #include <linux/dma-mapping.h> /* for have_iommu */
47 extern int iommu_setup(char *opt);
49 /* The PCI address space does equal the physical memory
50 * address space. The networking and block device layers use
51 * this boolean for bounce buffer decisions
53 * On AMD64 it mostly equals, but we set it to zero if a hardware
54 * IOMMU (gart) of sotware IOMMU (swiotlb) is available.
56 #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
58 #ifdef CONFIG_GART_IOMMU
61 * x86-64 always supports DAC, but sometimes it is useful to force
62 * devices through the IOMMU to get automatic sg list merging.
65 extern int iommu_sac_force;
66 #define pci_dac_dma_supported(pci_dev, mask) (!iommu_sac_force)
68 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
70 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
72 #define pci_unmap_addr(PTR, ADDR_NAME) \
74 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
75 (((PTR)->ADDR_NAME) = (VAL))
76 #define pci_unmap_len(PTR, LEN_NAME) \
78 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
79 (((PTR)->LEN_NAME) = (VAL))
84 #define pci_dac_dma_supported(pci_dev, mask) 1
86 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
87 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
88 #define pci_unmap_addr(PTR, ADDR_NAME) (0)
89 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
90 #define pci_unmap_len(PTR, LEN_NAME) (0)
91 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
95 #include <asm-generic/pci-dma-compat.h>
97 static inline dma64_addr_t
98 pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page, unsigned long offset, int direction)
100 return ((dma64_addr_t) page_to_phys(page) +
101 (dma64_addr_t) offset);
104 static inline struct page *
105 pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr)
107 return virt_to_page(__va(dma_addr));
110 static inline unsigned long
111 pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr)
113 return (dma_addr & ~PAGE_MASK);
117 pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
122 pci_dac_dma_sync_single_for_device(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
124 flush_write_buffers();
128 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
129 enum pci_dma_burst_strategy *strat,
130 unsigned long *strategy_parameter)
132 *strat = PCI_DMA_BURST_INFINITY;
133 *strategy_parameter = ~0UL;
137 #define HAVE_PCI_MMAP
138 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
139 enum pci_mmap_state mmap_state, int write_combine);
141 static inline void pcibios_add_platform_entries(struct pci_dev *dev)
145 #endif /* __KERNEL__ */
147 /* generic pci stuff */
149 #include <asm-generic/pci.h>
152 #endif /* __x8664_PCI_H */