include/asm-i386/pci.h

   1 #ifndef __i386_PCI_H
   2 #define __i386_PCI_H
   3
   4
   5 #ifdef __KERNEL__
   6 #include <linux/mm.h>           /* for struct page */
   7
   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 */
  11
  12 #ifdef CONFIG_PCI
  13 extern unsigned int pcibios_assign_all_busses(void);
  14 #else
  15 #define pcibios_assign_all_busses()     0
  16 #endif
  17 #define pcibios_scan_all_fns(a, b)      0
  18
  19 extern unsigned long pci_mem_start;
  20 #define PCIBIOS_MIN_IO          0x1000
  21 #define PCIBIOS_MIN_MEM         (pci_mem_start)
  22
  23 #define PCIBIOS_MIN_CARDBUS_IO  0x4000
  24
  25 void pcibios_config_init(void);
  26 struct pci_bus * pcibios_scan_root(int bus);
  27
  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);
  32
  33 /* Dynamic DMA mapping stuff.
  34  * i386 has everything mapped statically.
  35  */
  36
  37 #include <linux/types.h>
  38 #include <linux/slab.h>
  39 #include <asm/scatterlist.h>
  40 #include <linux/string.h>
  41 #include <asm/io.h>
  42
  43 struct pci_dev;
  44
  45 /* The PCI address space does equal the physical memory
  46  * address space.  The networking and block device layers use
  47  * this boolean for bounce buffer decisions.
  48  */
  49 #define PCI_DMA_BUS_IS_PHYS     (1)
  50
  51 /* pci_unmap_{page,single} is a nop so... */
  52 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
  53 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
  54 #define pci_unmap_addr(PTR, ADDR_NAME)          (0)
  55 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
  56 #define pci_unmap_len(PTR, LEN_NAME)            (0)
  57 #define pci_unmap_len_set(PTR, LEN_NAME, VAL)   do { } while (0)
  58
  59 /* This is always fine. */
  60 #define pci_dac_dma_supported(pci_dev, mask)    (1)
  61
  62 static inline dma64_addr_t
  63 pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page, unsigned long offset, int direction)
  64 {
  65         return ((dma64_addr_t) page_to_phys(page) +
  66                 (dma64_addr_t) offset);
  67 }
  68
  69 static inline struct page *
  70 pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr)
  71 {
  72         return pfn_to_page(dma_addr >> PAGE_SHIFT);
  73 }
  74
  75 static inline unsigned long
  76 pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr)
  77 {
  78         return (dma_addr & ~PAGE_MASK);
  79 }
  80
  81 static inline void
  82 pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
  83 {
  84 }
  85
  86 static inline void
  87 pci_dac_dma_sync_single_for_device(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
  88 {
  89         flush_write_buffers();
  90 }
  91
  92 #define HAVE_PCI_MMAP
  93 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
  94                                enum pci_mmap_state mmap_state, int write_combine);
  95
  96
  97 static inline void pcibios_add_platform_entries(struct pci_dev *dev)
  98 {
  99 }
 100
 101 #ifdef CONFIG_PCI
 102 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
 103                                         enum pci_dma_burst_strategy *strat,
 104                                         unsigned long *strategy_parameter)
 105 {
 106         *strat = PCI_DMA_BURST_INFINITY;
 107         *strategy_parameter = ~0UL;
 108 }
 109 #endif
 110
 111 #endif /* __KERNEL__ */
 112
 113 /* implement the pci_ DMA API in terms of the generic device dma_ one */
 114 #include <asm-generic/pci-dma-compat.h>
 115
 116 /* generic pci stuff */
 117 #include <asm-generic/pci.h>
 118
 119 #endif /* __i386_PCI_H */