ia64/xen-unstable

view linux-2.6-xen-sparse/include/asm-xen/asm-i386/pci.h @ 6538:84ee014ebd41

Merge xen-vtx-unstable.hg
author adsharma@los-vmm.sc.intel.com
date Wed Aug 17 12:34:38 2005 -0800 (2005-08-17)
parents 23979fb12c49 3d187585c141
children 99914b54f7bf
line source
1 #ifndef __i386_PCI_H
2 #define __i386_PCI_H
4 #include <linux/config.h>
6 #ifdef __KERNEL__
7 #include <linux/mm.h> /* for struct page */
9 /* Can be used to override the logic in pci_scan_bus for skipping
10 already-configured bus numbers - to be used for buggy BIOSes
11 or architectures with incomplete PCI setup by the loader */
13 #ifdef CONFIG_PCI
14 extern unsigned int pcibios_assign_all_busses(void);
15 #else
16 #define pcibios_assign_all_busses() 0
17 #endif
18 #define pcibios_scan_all_fns(a, b) 0
20 extern unsigned long pci_mem_start;
21 #define PCIBIOS_MIN_IO 0x1000
22 #define PCIBIOS_MIN_MEM (pci_mem_start)
24 #define PCIBIOS_MIN_CARDBUS_IO 0x4000
26 void pcibios_config_init(void);
27 struct pci_bus * pcibios_scan_root(int bus);
29 void pcibios_set_master(struct pci_dev *dev);
30 void pcibios_penalize_isa_irq(int irq);
31 struct irq_routing_table *pcibios_get_irq_routing_table(void);
32 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
34 /* Dynamic DMA mapping stuff.
35 * i386 has everything mapped statically.
36 */
38 #include <linux/types.h>
39 #include <linux/slab.h>
40 #include <asm/scatterlist.h>
41 #include <linux/string.h>
42 #include <asm/io.h>
44 struct pci_dev;
46 /* On Xen we use SWIOTLB instead of blk-specific bounce buffers. */
47 #define PCI_DMA_BUS_IS_PHYS (0)
49 /* pci_unmap_{page,single} is a nop so... */
50 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
51 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
52 #define pci_unmap_addr(PTR, ADDR_NAME) (0)
53 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
54 #define pci_unmap_len(PTR, LEN_NAME) (0)
55 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
57 /* This is always fine. */
58 #define pci_dac_dma_supported(pci_dev, mask) (1)
60 static inline dma64_addr_t
61 pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page, unsigned long offset, int direction)
62 {
63 return ((dma64_addr_t) page_to_phys(page) +
64 (dma64_addr_t) offset);
65 }
67 static inline struct page *
68 pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr)
69 {
70 return pfn_to_page(dma_addr >> PAGE_SHIFT);
71 }
73 static inline unsigned long
74 pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr)
75 {
76 return (dma_addr & ~PAGE_MASK);
77 }
79 static inline void
80 pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
81 {
82 }
84 static inline void
85 pci_dac_dma_sync_single_for_device(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
86 {
87 flush_write_buffers();
88 }
90 #define HAVE_PCI_MMAP
91 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
92 enum pci_mmap_state mmap_state, int write_combine);
95 static inline void pcibios_add_platform_entries(struct pci_dev *dev)
96 {
97 }
99 #endif /* __KERNEL__ */
101 /* implement the pci_ DMA API in terms of the generic device dma_ one */
102 #include <asm-generic/pci-dma-compat.h>
104 /* generic pci stuff */
105 #include <asm-generic/pci.h>
107 /* On Xen we have to scan all functions since Xen hides bridges from
108 * us. If a bridge is at fn=0 and that slot has a multifunction
109 * device, we won't find the additional devices without scanning all
110 * functions. */
111 #undef pcibios_scan_all_fns
112 #define pcibios_scan_all_fns(a, b) 1
114 #endif /* __i386_PCI_H */