6 #include <linux/mm.h> /* for struct page */
8 /* Can be used to override the logic in pci_scan_bus for skipping
9 already-configured bus numbers - to be used for buggy BIOSes
10 or architectures with incomplete PCI setup by the loader */
13 extern unsigned int pcibios_assign_all_busses(void);
15 #define pcibios_assign_all_busses() 0
17 #define pcibios_scan_all_fns(a, b) 0
19 extern unsigned long pci_mem_start;
20 #define PCIBIOS_MIN_IO 0x1000
21 #define PCIBIOS_MIN_MEM (pci_mem_start)
23 #define PCIBIOS_MIN_CARDBUS_IO 0x4000
25 void pcibios_config_init(void);
26 struct pci_bus * pcibios_scan_root(int bus);
28 void pcibios_set_master(struct pci_dev *dev);
29 void pcibios_penalize_isa_irq(int irq, int active);
30 struct irq_routing_table *pcibios_get_irq_routing_table(void);
31 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
33 /* Dynamic DMA mapping stuff.
34 * i386 has everything mapped statically.
37 #include <linux/types.h>
38 #include <linux/slab.h>
39 #include <asm/scatterlist.h>
40 #include <linux/string.h>
48 /* On Xen we use SWIOTLB instead of blk-specific bounce buffers. */
49 #define PCI_DMA_BUS_IS_PHYS (0)
51 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
53 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
55 #define pci_unmap_addr(PTR, ADDR_NAME) \
57 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
58 (((PTR)->ADDR_NAME) = (VAL))
59 #define pci_unmap_len(PTR, LEN_NAME) \
61 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
62 (((PTR)->LEN_NAME) = (VAL))
66 /* The PCI address space does equal the physical memory
67 * address space. The networking and block device layers use
68 * this boolean for bounce buffer decisions.
70 #define PCI_DMA_BUS_IS_PHYS (1)
72 /* pci_unmap_{page,single} is a nop so... */
73 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
74 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
75 #define pci_unmap_addr(PTR, ADDR_NAME) (0)
76 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
77 #define pci_unmap_len(PTR, LEN_NAME) (0)
78 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
82 /* This is always fine. */
83 #define pci_dac_dma_supported(pci_dev, mask) (1)
85 static inline dma64_addr_t
86 pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page, unsigned long offset, int direction)
88 return ((dma64_addr_t) page_to_phys(page) +
89 (dma64_addr_t) offset);
92 static inline struct page *
93 pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr)
95 return pfn_to_page(dma_addr >> PAGE_SHIFT);
98 static inline unsigned long
99 pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr)
101 return (dma_addr & ~PAGE_MASK);
105 pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
110 pci_dac_dma_sync_single_for_device(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
112 flush_write_buffers();
115 #define HAVE_PCI_MMAP
116 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
117 enum pci_mmap_state mmap_state, int write_combine);
120 static inline void pcibios_add_platform_entries(struct pci_dev *dev)
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 #endif /* __KERNEL__ */
136 #ifdef CONFIG_XEN_PCIDEV_FRONTEND
137 #include <xen/pcifront.h>
138 #endif /* CONFIG_XEN_PCIDEV_FRONTEND */
140 /* implement the pci_ DMA API in terms of the generic device dma_ one */
141 #include <asm-generic/pci-dma-compat.h>
143 /* generic pci stuff */
144 #include <asm-generic/pci.h>
146 /* On Xen we have to scan all functions since Xen hides bridges from
147 * us. If a bridge is at fn=0 and that slot has a multifunction
148 * device, we won't find the additional devices without scanning all
150 #undef pcibios_scan_all_fns
151 #define pcibios_scan_all_fns(a, b) 1
153 #endif /* __i386_PCI_H */