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 0x4000
26 #define PCIBIOS_MIN_MEM (pci_mem_start)
28 void pcibios_config_init(void);
29 struct pci_bus * pcibios_scan_root(int bus);
30 extern int (*pci_config_read)(int seg, int bus, int dev, int fn, int reg, int len, u32 *value);
31 extern int (*pci_config_write)(int seg, int bus, int dev, int fn, int reg, int len, u32 value);
33 void pcibios_set_master(struct pci_dev *dev);
34 void pcibios_penalize_isa_irq(int irq, int active);
35 struct irq_routing_table *pcibios_get_irq_routing_table(void);
36 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
38 #include <linux/types.h>
39 #include <linux/slab.h>
40 #include <asm/scatterlist.h>
41 #include <linux/string.h>
44 extern int iommu_setup(char *opt);
46 #ifdef CONFIG_GART_IOMMU
47 /* The PCI address space does equal the physical memory
48 * address space. The networking and block device layers use
49 * this boolean for bounce buffer decisions
51 * On AMD64 it mostly equals, but we set it to zero to tell some subsystems
52 * that an IOMMU is available.
54 #define PCI_DMA_BUS_IS_PHYS (no_iommu ? 1 : 0)
57 * x86-64 always supports DAC, but sometimes it is useful to force
58 * devices through the IOMMU to get automatic sg list merging.
61 extern int iommu_sac_force;
62 #define pci_dac_dma_supported(pci_dev, mask) (!iommu_sac_force)
64 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
66 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
68 #define pci_unmap_addr(PTR, ADDR_NAME) \
70 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
71 (((PTR)->ADDR_NAME) = (VAL))
72 #define pci_unmap_len(PTR, LEN_NAME) \
74 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
75 (((PTR)->LEN_NAME) = (VAL))
80 #define PCI_DMA_BUS_IS_PHYS 1
81 #define pci_dac_dma_supported(pci_dev, mask) 1
83 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
84 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
85 #define pci_unmap_addr(PTR, ADDR_NAME) (0)
86 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
87 #define pci_unmap_len(PTR, LEN_NAME) (0)
88 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
92 #include <asm-generic/pci-dma-compat.h>
94 static inline dma64_addr_t
95 pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page, unsigned long offset, int direction)
97 return ((dma64_addr_t) page_to_phys(page) +
98 (dma64_addr_t) offset);
101 static inline struct page *
102 pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr)
104 return virt_to_page(__va(dma_addr));
107 static inline unsigned long
108 pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr)
110 return (dma_addr & ~PAGE_MASK);
114 pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
119 pci_dac_dma_sync_single_for_device(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
121 flush_write_buffers();
125 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
126 enum pci_dma_burst_strategy *strat,
127 unsigned long *strategy_parameter)
129 *strat = PCI_DMA_BURST_INFINITY;
130 *strategy_parameter = ~0UL;
134 #define HAVE_PCI_MMAP
135 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
136 enum pci_mmap_state mmap_state, int write_combine);
138 static inline void pcibios_add_platform_entries(struct pci_dev *dev)
142 #endif /* __KERNEL__ */
144 /* generic pci stuff */
146 #include <asm-generic/pci.h>
149 #endif /* __x8664_PCI_H */