include/asm-i386/pci.h

   1 #ifndef __i386_PCI_H
   2 #define __i386_PCI_H
   3
   4 #include <linux/config.h>
   5
   6 #ifdef __KERNEL__
   7 #include <linux/mm.h>           /* for struct page */
   8
   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 */
  12
  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
  19
  20 extern unsigned long pci_mem_start;
  21 #define PCIBIOS_MIN_IO          0x1000
  22 #define PCIBIOS_MIN_MEM         (pci_mem_start)
  23
  24 #define PCIBIOS_MIN_CARDBUS_IO  0x4000
  25
  26 void pcibios_config_init(void);
  27 struct pci_bus * pcibios_scan_root(int bus);
  28
  29 void pcibios_set_master(struct pci_dev *dev);
  30 void pcibios_penalize_isa_irq(int irq, int active);
  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);
  33
  34 /* Dynamic DMA mapping stuff.
  35  * i386 has everything mapped statically.
  36  */
  37
  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>
  43
  44 struct pci_dev;
  45
  46 /* The PCI address space does equal the physical memory
  47  * address space.  The networking and block device layers use
  48  * this boolean for bounce buffer decisions.
  49  */
  50 #define PCI_DMA_BUS_IS_PHYS     (1)
  51
  52 /* pci_unmap_{page,single} is a nop so... */
  53 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
  54 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
  55 #define pci_unmap_addr(PTR, ADDR_NAME)          (0)
  56 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
  57 #define pci_unmap_len(PTR, LEN_NAME)            (0)
  58 #define pci_unmap_len_set(PTR, LEN_NAME, VAL)   do { } while (0)
  59
  60 /* This is always fine. */
  61 #define pci_dac_dma_supported(pci_dev, mask)    (1)
  62
  63 static inline dma64_addr_t
  64 pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page, unsigned long offset, int direction)
  65 {
  66         return ((dma64_addr_t) page_to_phys(page) +
  67                 (dma64_addr_t) offset);
  68 }
  69
  70 static inline struct page *
  71 pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr)
  72 {
  73         return pfn_to_page(dma_addr >> PAGE_SHIFT);
  74 }
  75
  76 static inline unsigned long
  77 pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr)
  78 {
  79         return (dma_addr & ~PAGE_MASK);
  80 }
  81
  82 static inline void
  83 pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
  84 {
  85 }
  86
  87 static inline void
  88 pci_dac_dma_sync_single_for_device(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
  89 {
  90         flush_write_buffers();
  91 }
  92
  93 #define HAVE_PCI_MMAP
  94 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
  95                                enum pci_mmap_state mmap_state, int write_combine);
  96
  97
  98 static inline void pcibios_add_platform_entries(struct pci_dev *dev)
  99 {
 100 }
 101
 102 #ifdef CONFIG_PCI
 103 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
 104                                         enum pci_dma_burst_strategy *strat,
 105                                         unsigned long *strategy_parameter)
 106 {
 107         *strat = PCI_DMA_BURST_INFINITY;
 108         *strategy_parameter = ~0UL;
 109 }
 110 #endif
 111
 112 #endif /* __KERNEL__ */
 113
 114 /* implement the pci_ DMA API in terms of the generic device dma_ one */
 115 #include <asm-generic/pci-dma-compat.h>
 116
 117 /* generic pci stuff */
 118 #include <asm-generic/pci.h>
 119
 120 #endif /* __i386_PCI_H */